年轻人本能地提防陌生人是时代的征兆，这很遗憾，但又很必要。

It's an unfortunate, but necessary, sign of our times that youngsters are instinctively wary of strangers.

youdao

有时他对于没能生在亚当·斯密的时代而感到遗憾不已。

He sometimes regretted he had not lived in Smith's time.

youdao

让英国的前殖民地国家作为掌舵者，几乎没有一丝后帝国时代的遗憾。

As Britain's former colonial subjects come back as masters, there is barely a whiff of post-imperial regret.

youdao