The main study in this paper included as follows : the content and distribution of heavy metals in sediments and benthic organisms from the sewage stream in guangzhou city ; the acute toxicity and joint toxicity of mercury and selenium to swordtail fish ( xiphophorus helleri ) ; the damage of mercury to the indexes of antioxidant system in the gills and livers in swordtail ( including the measurement of the activities of total antioxidative capacity [ t ~ aoc ], superoxide dismutase [ sod ], glutathione peroxidase [ gsh - px ] and the concentration of malondiald - ehyde [ mda ] ) and the relief effects of selenium on it, as well as the physiological damage of mercury on the tissues, namely : the antagonistic effect of na + - k + ~ atpase activity on the tissues between selenite and mercury, and the ultrastructural damage under the exposure of mercury
研究內容主要有：廣州市河涌沉積物及底棲生物體內重金屬含量及評價；汞和硒對
劍尾魚的急性毒性和聯合毒性及安全濃度的評價；汞對
劍尾魚鰓和肝臟中抗氧化系統的毒性，包括對總抗氧化能力、超氧化物歧化酶、谷胱甘肽過氧化物酶活力及丙二醛含量的測定及硒對其保護作用；汞對
劍尾魚組織生理毒性即：汞對na ~ + - k ~ + atpase活力的影響及硒的保護作用和汞和對
劍尾魚組織超微結構的損傷等。以高氯酸?硝酸消化法和火焰原子吸收分光光度法測定了廣州市河涌沉積物和底棲生物中重金屬含量。
From morioka, oshu clan. north star one - sword school. licensed
來自盛崗的
尾首部族受業于北辰一
劍流，已獲武士資格
The blade is 4. 5cm wide, with flower pattern. the fittings might be changed. scabbard head and tail are purple copper, and others are brass. what i don ' t understand is there ' s a protuberant thing like a nail head on blade
老
劍比刀寬，刃寬為4 . 5厘米.花卉圖案，裝具可能以前老改過，鞘頭，鞘
尾為紫銅，其它均為黃銅.最不解的是刃上有一突起象釘子頭
The sleek swordtail is an agile swimmer and needs plenty of room
圓滑的
劍尾魚是一個敏捷的泳者並且需要充足的活動空間。
This paper summarized the main endpoints and special sensitive indices of fish in the study of endocrine disruption, and introduced the main biological characteristics of several fish species such as chinese rare minnow, zebrafish, medaka, guppy, swordtail fish and fathead minnow, and their use in screening, detecting and assessment for endocrine disruptors
本文主要綜述了利用魚類進行內分泌干擾研究的主要測試終點和敏感效應指標；重點介紹了稀有鮑鯽、斑馬魚、日本青? 、孔雀魚、
劍尾魚、黑頭軟口鰷等魚類的主要生物學特性，以及利用它們進行內分泌干擾物的篩選與測試方面的研究成果。
Bees that have honey in their mouths have stings in their tails
口裡含著花蜜的蜜蜂，
尾巴卻有螫。口蜜腹
劍。笑裡藏刀。
A quality black leather scabbard with nickel silver tip and throat is included
配有高品質的黑色皮革
劍鞘，鎳黃銅鞘
尾和鞘喉。
Compared to the single hg2 + treated, se4 + + hg2 + the mixed exposure could restrain the fall of the activity of t ? aoc, sod and gsh ? px, reducing the level of lipid peroxidation, and alleviating membrane damage, represented with the heighten na + - k + - atpase activity and reduced mda concentration, resulting in the increased resistance to hg2 + damage. however, se4 + were incapable of preventing from the damage of hg2 + ultimately, along with the exposure period, regardless of the fact that the obvious enhancement of t - aoc and atpase activity
混合處理后，與單一汞處理相比， se ~ （ 4 + ）在一定程度上能有效抑制汞脅迫引起的t ? aoc ， sod ， gsh ? px的降低，降低膜脂質過氧化水平，減輕了對膜的硒對汞致
劍尾魚抗氧化系統的毒害和生理損傷的拮抗作用損傷，表現為隨一k + / atpase活力升高，而mda含量降低，提高了機體對hg葉毒害的抗性;但隨著染毒時間延長，硒不能最終阻止毒害的加深。
Based on experimental result of energy dissipation and scour protection for downstream of spillway at yu jian kou power station, this paper discusses the flow characteristics, aerated characteristics of flaring gate pier for low dam pivot, the influence on pressure of dam surface and the result of energy dissipation for flaring gate pier. it is put forward to be an available method to solve the problems of energy dissipation and scour protection for depth of covering strata, poor geologic condition and weakness of resistance to scour capability under reasonable use of flaring gate piers and auxiliary dissipaters. thus, a new method is obtained for release of floodwater and energy dissipation of low dam pivot which are provided with low water head, great unit discharge and low froud coefficient. it may be used for reference for design and test workers
結合魚
劍口電站壩下消能防沖試驗研究成果，對低壩樞紐寬
尾墩的水流特點、摻氣特性、寬
尾墩對大壩泄流能力和壩面壓力的影響以及寬
尾墩的消能效果等問題進行了初步探討，提出了合理地使用寬
尾墩結合輔助消能設施可有效地解決壩下覆蓋層深，地質條件差，抗沖能力弱的低壩樞紐的消能防沖問題，從而為具有低水頭，大單寬流量，低佛氏數特點的低壩樞紐泄洪消能開辟了一條新途徑，可供有關低壩樞紐設計與試驗工作者借鑒與參考
Aoccdrnig to rscheearch at cmabrigde uinervtisy, it deosn ' t mttaer waht oredr the ltteers in a wrod are, the olny iprmoetnt tihng is taht the frist and lsat ltteres are at the rghit pclae
根據
劍橋大學的調查研究，一個單詞中字母的排放順序無關緊要，最重要的一點在於首
尾字母是否擺放在正確的位置上。
Xiphophorus can store sperm for several months. our records indicate that storage can be up to 9 months and possibly longer
劍尾魚可以儲存幾個月的精子。我們的記錄顯示可以儲存9個月甚至更長！
Abstract : based on experimental result of energy dissipation and scour protection for downstream of spillway at yu jian kou power station, this paper discusses the flow characteristics, aerated characteristics of flaring gate pier for low dam pivot, the influence on pressure of dam surface and the result of energy dissipation for flaring gate pier. it is put forward to be an available method to solve the problems of energy dissipation and scour protection for depth of covering strata, poor geologic condition and weakness of resistance to scour capability under reasonable use of flaring gate piers and auxiliary dissipaters. thus, a new method is obtained for release of floodwater and energy dissipation of low dam pivot which are provided with low water head, great unit discharge and low froud coefficient. it may be used for reference for design and test workers
文摘:結合魚
劍口電站壩下消能防沖試驗研究成果，對低壩樞紐寬
尾墩的水流特點、摻氣特性、寬
尾墩對大壩泄流能力和壩面壓力的影響以及寬
尾墩的消能效果等問題進行了初步探討，提出了合理地使用寬
尾墩結合輔助消能設施可有效地解決壩下覆蓋層深，地質條件差，抗沖能力弱的低壩樞紐的消能防沖問題，從而為具有低水頭，大單寬流量，低佛氏數特點的低壩樞紐泄洪消能開辟了一條新途徑，可供有關低壩樞紐設計與試驗工作者借鑒與參考
Ujio is teaching you the way of the japanese sword
氏
尾讓你領教了日本
劍道
Across the sands of all the world, followed by the sun s flaming sword, to the west, trekking to evening lands
跨過世界上所有的沙地，太陽那把火焰
劍尾隨於後，向西邊，向黃昏的土地移動165 。
The young man couldn ' t stand looking at that quivering tail, so he scooped it up with his sword and flung it in a drawer
看著那截還在扭動的
尾巴，年青人心裏直發毛，於是就用
劍把
尾巴挑了起來，甩到抽屜里去了。
Females may not be physiologically able to reproduce ; in particular, older females may be infertile
母
劍尾魚可能不能生育，特別要指出的是，老年的母
劍尾魚可能會絕育。
It was realized as early as the 1920 ' s that one could make hybrids between the different species
劍尾魚是一種淡水魚，它的基因包含23種（我不清楚這23種是否指的是染色體） 。
Ai can be used in non - hybrid matings when the situation dictates, such as when a mating pair has not produced offspring after several months of co - habitation
在某些時候人工受精技術會使用於不同類型的純種劍尾魚之間的雜交，例如一對雜交種魚經過了幾個月的同缸生活后還是沒有生產後代。
