Melatonin ( n - acetyl - 5 - methoxytryptamine ) was discovered by a lerner and his colleagues [ l ] as the principal hormone of vertebrate pineal gland, an unpaired appendage of the brain in most vertebrates and named by him after its effects on amphibian melanophore. however, it is now known that many cells and tissues synthesis and the nature of organisms, melatonin is secreted in the night, thus, melatonin is identified as an endocreine index of the darkness and referred to as darkness hormone [ 3 ]. melatonin has aslo been called by other names, such as nature ' s sleeping pill for it role in sleep - wake cycles, and circadian glue for its increasing importance in the regulation of circadian and circannual physiological and behavioural functions, moreover it is also involved in the regulation of the immune respone and various cns activies, in the last decade, considerable attention has been devoted to the pharmacology of melatonin in view of its potential applications in various therapeutic areas
褪黑素（ n -乙酰- 5 -甲氧基色胺， melatonin ，簡
稱mt ） ，由lerner和他的同事們發現[ 1 ] ，后來根據它對兩
棲動物黑色素細胞的影響而命名，是脊椎動物松果腺分泌的一種重要激素。松果體在大多數多脊椎動物中是一個孤立的附屬器官。然而，現在眾所周知很多細胞和組織合成mt ，若不考慮合成的位點和機體的屬性， mt在晚上分泌，正因如此， mt被認為是一種黑暗的內源性指標，被
稱作黑色激素[ 3 ] 。
They fly north again in april or may. the undisturbed natural environment of the tsengwen estuary, and the abundant tilapia and crucian carp of chiku s vast fish farms, provide the spoonbills with a suitable overwintering habitat
曾文溪口自然不吵雜的
棲息環境，以及廣大的七股漁瘟中俗
稱下雜魚的吳郭魚鯽魚，提供了黑面琵鷺食宿無虞的渡冬環境。
He says the aircraft carrier abraham lincoln, a maritime squadron from guam and an amphibious ship carrying a marine expeditionary unit will soon be in position to support relief efforts, including supplying clean water
據
稱，在亞伯拉罕.林肯號航空母艦上的一個從關島出發的海軍中隊，以及載有一個海軍遠征分隊的海陸倆
棲艇，會很快趕到出事地點，提供營救幫助，以及提供凈水。
" when we started the anti - fire brigades project, we specifically targeted the areas where siberian tigers live, " pointed out vladimir dmitriev, a forest officer with wwf - russia
世界自然基金會俄羅斯分會的林業主任vladimir dmitriev
稱：我們在設立特別機動隊之初，已把西伯利亞虎的
棲息地列為指定保護目標。
Zhong mian, director of the provincial tourism bureau, said that the province will develop a series of programs featuring three famous tourism attractions : the giant panda habitat, the scenic jiuzhaigou resort and the sanxingdui relics site
四川省旅遊局局長鐘勉
稱，四川省將開展以三大旅遊名勝- -大熊貓
棲息地、九寨溝風景區和三星堆遺址為特色的一系列方案。
Otherwise known as costa rica s cocos island, this underwater mountain - an island of the sharks - is a migratory gathering place for a dazzling array of sea creatures including sharks, manta rays, sea turtles and dolphins
因為這里是不少海洋生物的
棲息地，充斥著鯊魚魔鬼魚海和海豚，這里可能是全球鯊魚聚居密度最高的海域，故又
稱為鯊魚島。
The seven - star cave, known in ancient time as xi xia cave, is located deep in putuo mountain in qixing park. the one million - year - old cave was originally a section of a underground river
七星巖，古
稱棲霞洞，在七星公園內普陀山腹，原來是一段地下河，已有百余萬年的歷史。
However, there are amphibious penguins and seals and a rich marine life, ranging from the minute organisms called plankton to the biggest creature the world has ever known, the blue whale
然而，這里卻有著兩
棲的企鵝和海豹以及豐富的海洋生命?包括從被
稱為浮游生物的微小生物，直到迄今所知世界上最大的動物藍鯨。
" the convention on wetlands of international importance especially as waterfowl habitat ", also known as " ramsar convention "
關于特別是作為水禽
棲息地的國際重要濕地公約又
稱拉姆薩爾公約。
The implementation of the convention on wetlands of international importance especially as waterfowl habitat ( ramsar convention ) in hong kong
在香港實施關于特別是作為水禽
棲息地的國際重要濕地公約（又
稱拉姆薩爾公約） ；
Since there lives about 100, 000 migratory birds, the island is called " the kingdom of birds "
鳥島上
棲息著近10萬只候鳥，堪
稱"鳥的王國" 。
This combination of high numbers of vulnerable species and high rates of habitat destruction defines these areas as what our duke university colleague norman myers calls “ hot spots ” [ see box on pages 70 and 71 ]
我們美國杜克大學的同事梅耶，將這些結合了大量易受害物種和
棲境破壞率極高的地點，
稱為熱點（見60 ~ 61頁拯救特定地區） 。
The holy mount athos of greece is a rare resort occupied by 900 monks. it was listed in unesco ' s world culture heritage catalogue in 1988. it is noted for its bizarre laws
900名修道士
棲身的希臘聖山? ?阿陀斯山堪
稱不可多得的旅遊勝地， 1988年其成為聯合國教科文組織世界文化遺產。可這里的律法甚是怪異，它也因此而舉世聞名！
They are a mysterious group of animals called amphibians, or more commonly known as frogs and salamanders
這群神秘的動物名為兩
棲類動物，亦常
稱為蛙類或蠑螈。
From the 1950s through her complete retirement in the 1960s, ms yam was active on the stage and the screen, appearing in well over 300 films
一向被人尊稱為任姐的她自五十年代起已是伶影雙棲，至六十年代完全息影為止，演出電影超過300部。
