它是雄的还是雌的?
而对雌老鼠而言,却不会发生这种适应性。
只有雌蚊吸食血液。
两只章鱼,一雄一雌,能产生56000个卵。
It took two octopuses, a male and a female, to make the 56,000 eggs.
知其雄,守其雌。(第二十八章)
雄羚羊和雌羚羊通常都有角。
雄虫:虫体前部与雌虫相似。
雌袋鼠把小袋鼠装在肚袋内。
一只雄蟹遇到了一只雌蟹,便向她求婚。
雄燕和雌燕共同抚养幼雏。
她也承认了她不是人类﹐她是一只雌狐。
She also admitted to him that she was not a human. She was a female fox.
一个孩子正在喂动物园里的那只雌孔雀。
塔米:我想我有主意了…它们都是雌的吗?
我怎么才能知道一只天鹅是雌的还是雄的呢?
在杂交劣生试验中,发现了一只镶嵌体雌蝇。
这样的空当就给了雌杜鹃自由选择巢穴产卵的机会。
Such leeway would make it easier for a female cuckoo to lay where she chose.
动物园雌象比起它们的野生的同伴来说要死得早。
C. Female zoo elephants die much earlier than their wild counterparts.
雄性不育株的雌球花发育正常,并能正常开花、授粉和结籽。
The female cone of the male sterile plant can blossom, pollinate and bear seeds normally.
在某些蜘蛛群里——例如“黑寡妇”蜘蛛——雄蜘蛛的个头要比雌蜘蛛小得多。
With some spiders, including the black widow, the male is much smaller than the female.
在某些蜘蛛群里——例如“黑寡妇”蜘蛛——雄蜘蛛的个头要比雌蜘蛛小得多。
With some spiders, including the black widow, the male is much smaller than the female.
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