Females have litters of one to four cubs, which are blind and helpless at birth.
雌性一次产崽1-4个, 小美洲虎刚生下来时是瞎的,脆弱的.
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Moreover , it can obviously alter the secretion level of P and LH of the adult rat.
使成年假孕雌性大鼠的P、LH分泌水平发生明显变化.
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The female has white stripes above and below the eye and mottled underparts.
雌性在眼睛上下有白色条纹,下体有花纹.
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The Monarch Butterfly breathes through its wings and female Monarchs have thicker wing veins.
帝王蝶通过翅膀呼吸,雌性帝王蝶有更加厚实的翅膀脉络.
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Milk: Liquid secreted by the mammary glands of female mammals to nourish their young.
奶: 雌性哺乳动物在产后一段时期从乳腺分泌的汁液,可用来喂养幼雏.
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This suggests that only very healthy women can afford high oestrogen levels.
这就说明只有十分健康的女人才有本钱拥有高含量的雌性激素.
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The female platypus , like other mamals, feeds her babies with milk from her body.
像其他哺乳动物一样,雌性的鸭嘴兽用自己的奶喂养它的孩子.
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Does the contact sex pheromone of Japanese pine sawyer , Monochamus alternatus, exist?
松墨天牛是否存在雌性接触信息素?
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A female Macleay's specter stick insect pauses on a branch at the Cincinnati Zoo.
一只雌性麦克里幽灵竹节虫在辛辛那提动物园的一条树枝上休息.
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Estrogen a much stronger role than that of testosterone in stimulating tubulin synthesis.
结果表明雌性激素具有显著的促进成年鼠脑微管蛋白合成的作用.
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The female scoops up the young measureunder a foot and takes them to the water.
雌性鳄鱼则会为这些年轻的鳄鱼铲起一英尺深的路,把它们带到水中.
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For millions of years, primates have secluded themselves in treetops or bushes to give birth.
灵长类的雌性躲到树上或灌木丛中生产,不知已经几百万年了, 只有人类孕妇会在生产过程中寻求助手.
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雌性生殖系统由一对卵巢、一对侧输卵管、一个中输卵管、受精囊、交尾囊和一个附腺构成。
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方法与材料将接种EMT-6乳腺癌细胞的40只雌性BALB/c小鼠随机分为肿瘤对照组和GPC（10、100、200mg/kg）3个剂量组，每组10只。
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Human beings are the only primate species that regularly seeks assistance during labor and delivery.
那麽,我们的雌性祖先在什麽时候放弃自立自强的生产之道?
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Three female lions and a pair of cubs rest in the grass in Botswana's Okavango Delta.
三只雌性狮子和一对幼兽休息在草地上位于博茨瓦纳的奥卡万戈三角洲.
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