In 1890 he proposed that evolution was irreversible: that 'an organism is unable to return, even partially, to a previous stage already realised in the ranks of its ancestors'.
1890年，他提出进化是不可逆转的：“一个有机体无法回到其祖先先前到达的阶段，即使是部分逆转，也不可能。”
The 1950s saw a growing number of women engaged in farm labor, even though rhetoric in the popular media called for the return of women to domestic life.
在20世纪50年代，尽管大众媒体呼吁妇女回归家庭生活，但越来越多的妇女从事农业劳动。
The students return in October for the start of the new academic year.
学生于十月返校，开始新学年的学习。
The most testing time is undoubtedly in the early months of your return to work.
最考验人的时候无疑是在你重返工作岗位的头几个月。
They could pack in their marching and picketing, return to the bosom of their grieving families and enjoy an evening at home .
他们终于能够停下他们的远征和运动，回到伤心的家庭的怀抱，享受家庭的夜晚。
What they do mind is leaving the beauty of the wilderness and the good friends they've made to return to their normal lives in the city.
他们真正在意的是离开美丽的荒野和他们的好朋友，来回到他们城市里的正常生活。
The actress posed for the shot on set of the River Of No Return in 1953, wearing a black bikini and one high heel.
1953年，这位女演员身穿黑色比基尼和高跟鞋，在电影《不归之河》的片场摆拍。
Upon learning of systematic discrimination experienced by African Americans in the military, he called on them to "return fighting" from the war.
在了解到非裔美国人在军队中遭受的系统性歧视后，他呼吁他们从战争中“回复斗争”。
In that case, climax communities would be the most fragile and the least stable, since they can require hundreds of years to return to the climax state.
在这种情况下，顶极群落会是最脆弱和最不稳定的，因为它们可能需要数百年才能恢复到顶极状态。
Each spring, thousands of walruses return to the Walrus Islands in northern Bristol Bay to feed, rest, and sometimes die.
每年春天，成千上万只海象返回到布里斯托尔湾北部的海象群岛觅食、休憩、有时死亡。
It also slows down more as you move faster, which means astronauts some day may survive so long in space that they would return to an earth of the distant future.
当你移动得更快时，它的速度也会减慢，这意味着有一天宇航员可能会在太空中生存很长时间，以至于在遥远的将来他们才会回到地球。
I go thither and return, in the twinkling of an eye.
我转眼间就能去天上再回来。
The threat of nationalization may have been seen off for now, but it will return with a vengeance if the justified anger of passengers is not addressed in short order.
国有化的威胁可以暂时避免，但如果乘客的合理愤怒不能在短时间内得到解决，国有化的威胁将会卷土重来。
The more imbalanced we become due to overworking, the more value there is in activities that allow us to return to a state of balance.
我们越是由于过度工作而变得失衡，那些能让我们调整回平衡状态的活动就越有价值。
In return, the Czar sent him a troop of his best soldiers.
作为回报，沙皇送给了他一支最好的军队。
A child's ability to become deeply absorbed in something, and derive intense pleasure from that absorption, is something adults spend the rest of their lives trying to return to.
孩子能够全神贯注于某件事，并从中获得强烈的快乐，这是成年人终生都想要重新获得的一种能力。
Rebecca West wrote a good many novels and one in particular called The Return of the Soldier, the protagonist of which is also a traumatized war victim.
丽贝卡·韦斯特写了很多小说，其中有一本叫《军士翻箱》，书中的主人公也是一个饱受创伤的战争受害者。
Rebecca West wrote a good many novels and one in particular called The Return of the Soldier, the protagonist of which is also a traumatized war victim.
丽贝卡·韦斯特写了很多小说，其中有一本叫《军士翻箱》，书中的主人公也是一个饱受创伤的战争受害者。
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