有奖纠错
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The flowers were pretreated by (A) emasculating then bagging, (B) removal of stigma and (C) crosspollination, respectively as compared with control: open-pollination after emasculation.

套袋、截柱头以破坏授粉和杂交授粉等处理不套袋作对之间结实率不显著。

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Generative nuclei The two gametic nuclei formed by the division of the generative cell in the pollen tube of angiosperms.

在被子植物花粉管中生殖细胞(应为原核译者注)分裂成两个配子核。

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了不起盖茨比(原版)

" Is it a boy or a girl? " she asked delicately.

" 这是还是雌?" 她委婉地问。

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生活

One big gobbler snatched a tomato from me one day and ran away with it.

有一天,一只硕大火鸡从我手里叼走了一个番茄,然迅速跑掉了。

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吹小号天鹅

Finally his father, the cob, spoke up.

,他父亲天鹅打破了沉默。

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VOA词汇精讲

It looks a little like the beard on a male goat.

它看起来有点像山羊胡子。

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《分钟地球》趣味科普

Babyhood is actually the pinnacle of a male hyena’s life.

幼崽时期是一只鬣狗狗生巅峰。

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探索频道:龙之战

Let's say there's a stranger male attempting to insinuate himself with a female.

假定有一头陌生龙想要获得与雌性交配权。

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哈利波特与火焰杯

Containing a single hair from the tail of a particularly fine male unicorn...must have been seventeen hands; nearly gored me with his horn after I plucked his tail.

里面有一根从一只特别漂亮独角兽尾巴上拔下来毛......准有五六英尺呢。我拔了独角兽尾毛,它差点儿用角把我戳了个窟窿。

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PBS趣味科普

The population would be in a constant see-saw towards one sex or the other until, finally, a mutation arises that results in an equal ratio of offspring.

人口将会像一个跷跷板一样,两端分别是雌性和性,直某种变异出现,导致雌数量平衡局面产生。

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海底两万里(原版)

They formed distinct male-and-female groups, the father watching over his family, the mother suckling her little ones, the stronger youngsters emancipated a few paces away.

它们形成个别分开队伍,和雌一起,父海豹关心它家族,母海豹给它小海豹喂奶,有些已经壮大年轻海豹随意走开;在远一些地方。

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科学60秒-科学美国人 2022年9月合集

Gerber says that the males with more friends are likely more often invited to cruise for females… giving them more opportunities for cooperative canoodling.

Gerber 说朋友多海豚被邀请参加“猎艳巡游”机会更频繁,这让它们拥有更多机会在彼此协助下跟异性亲热。

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CNN 精选 2015年7月合集

It says no human will be bitten by a genetically modified mosquito because it will only release male mosquitoes which don't bite.

公司表示没有人将会被转基因蚊子叮咬, 因为这些都是不咬人蚊子。

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美国小学原版语文课

The hair is of a deep brown color in the male, and of a light or yellowish brown in the female.

颈鹿毛是深灰色,而雌颈鹿毛是淡褐色或黄褐色

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Scishow 精选系列

One example is androstenol, which is emitted by male pigs to signal a nearby female to assume a mating stance.

烯酮为例,它是猪释放,用以吸引附近雌性进行交配。

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自然世界:鲨鱼湾海豚

When he does, he will spend a lifetime roaming the bay with other males, becoming a much more generalist hunter.

离开之,它一生都将游弋在鲨鱼湾,像其他海豚那样成为顶尖猎人。

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科学60秒-科学美国人 2021年9月合集

The key to peace was prolonged physical contact with females—which causes female pheromones to rub off on the males.

果蝇平和关键是与雌性接触时间了,继而雌性信息素因摩擦而沾它们身上。

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侏罗纪搏击俱乐部

The Pachyrhinosaurus herds were made up of a few dominant males and a harem of females and their children.

肿鼻角龙群由几头处于统治地位龙一群妻妾和它们孩子构成。

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AP 听力 2019年12月合集

The President also spared a second gobbler named Bread from being served up on a Thanksgiving table near you.

总统还赦免了一只名叫“面包”火鸡,使其免于献身感恩节餐桌。

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6 Minute English 六分钟英语

Peahens – that's a female peacock - prefer male peacocks with lots of eyespots on their tail.

雌孔雀喜欢屏尾上眼状斑多孔雀。

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6 Minute English 六分钟英语

Well, one theory is that a male peacock's tail is a sign of his genes. Genes are part of the DNA in a cell that controls the physical development and behaviour of an animal.

一个理论是说孔雀屏尾是其基因一个展示。基因是细胞中遗传物质一个组成部分,控制着动物生理发育和行为方式。

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Wild China 纪录片

The challenger backs down. The size and strength of the defending male is just too much.

挑战者让步了。守卫熊猫体型和力量远在它之上。

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