Her parents are very tolerant, but sometimes she pushes them too far.

她的父母十分宽容，但她有时也让他们忍无可忍。

《牛津词典》

But sometimes it isn't the most useful one.

但有时候它不是最好用的那个。

youdao

But sometimes it's really tiring to finish all my work.

但有时候要做完所有的功课真的好累。

youdao

But sometimes, when one problem gets solved, another one appears.

VOA: special.2009.10.27

Normally, we do these things to keep an equilibrium among the different systems of the unconscious, but sometimes it doesn't work.

一般来说，我们会运用这些机制,去维持无意识系统的平衡，但有时防御机制也会不起作用。

耶鲁公开课 - 心理学导论课程节选

but they're still really good at like teaching, but sometimes a little bit crazy. Like... like very strange personalities.

但是他们还是很擅长教学，但是有时候有点疯狂，比如性格有点奇怪。

对于古怪教授 - SpeakingMax英语口语达人

Wombats generally live alone in their burrows, but sometimes there are more than one.

BBC: Protecting a wombat species that is as fast as Usain Bolt

But sometimes it is these small things that add up to make all the difference.

WHITEHOUSE: Our Top Stories

But sometimes the Gray Lady has a good day, and that deserves a boost too.

FORBES: Two Cheers For The New York Times