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。”

youdao

I have no idea if these stories are even partially true.

我不知道这些故事哪怕有半句属实。

youdao

If the user's goal is known, even partially, that information can be used to provide personalized guidance.

如果用户的目标已知或部分已知，该信息就可被用来提供个性化指南。

youdao

AARP's line is that any private accounts should supplement Social Security, not replace it, even partially.

ECONOMIST: The baby-boomers retire

However, he said even partially developed or destroyed parasites could significantly affect how the immune system responds to infection.

BBC: The malaria parasite is spread by mosquitoes

Bush political strategist Karl Rove clearly believes that even partially privatizing Social Security will give the country a new sense of involvement in investing.

NPR: Much at Stake in Defining Social Security 'Crisis'