雌驢 的英文怎麼說
中文拼音 [cílǖ]-
In attempting to domesticate the quagga ? a zebra - like, south american member of the horse family ( now extinct ) ? he was forced to breed a male with a female arabian mare
他在試圖馴養斑驢（一種馬，產于南美，外型象斑馬，現已絕跡）時，這匹雄性斑驢與一匹雌性阿拉伯母驢交配，雜交的結果正常。Similarly for mature females, a year in which forage is scarce will see few births and few of the foals that do make it into the world will survive
其他成年雌驢也會有類似情況，歉年的時候生產率會下降，能存活下來的驢仔更少。During prolonged periods of drought, the age at which a female first gives birth may be delayed
乾季延長的時候，雌驢生產第一胎的時間還會往後延。But competition among females for the sparse forage probably limits their ability to form long - term associations
但由於雌驢之間也會相互競爭有限的食物資源，因此很難形成長期穩定的關系。There we found a female, her foal and a male grazing near afar shepherds tending their sheep and goats
在那裡我們看到一匹雌驢、她的驢仔和一匹雄驢，就在阿法爾牧羊人放牧綿羊和山羊的不遠處吃草。Females in the same reproductive stage ? lactating mothers with foals, for example ? may temporarily move and forage together
同一繁殖階段的雌驢，例如同為哺乳期需要照顧驢仔的雌驢，也會暫時在一起活動覓食。What we have uncovered so far tells us that their behavior is typical for equids living in arid habitats : the dominant males maintain mating territories, and the only socially stable group is a mother and her offspring
我們目前的研究結果指出，非洲野驢的行為模式，就是乾燥環境下馬科動物的典型生活模式，亦即優勢雄驢會佔有領土並取得交配權，且只有雌驢和子代會形成穩定關系。Our findings about reproductive biology are still limited, but they indicate that females have their first foal at five or six years of age, rather than the more common four or five years, and then may give birth every other year
對于非洲野驢的繁殖，我們的研究仍然有限，但是已經觀察到雌驢產下第一胎的年齡，並非一般常見的4 ~ 5歲，而是在5 ~ 6歲左右，之後則是每隔一年生產一次。分享友人