Sometimes it even makes her less happy than she was before.

有时这研究让她比以前更不快乐。

哈佛公开课 - 幸福课课程节选

but, uh, some days it's more, some days it's less, sometimes I don't study at all.

不过，时间不固定，有时候多，有时候少，有些时候我一天都不学习。

MIT的时尚品味 - SpeakingMax英语口语达人