这条运河如果不经常疏浚，就会淤塞。

The canal would soon fill up with mud if not regularly dredged.

youdao

幸好，大部分销售专家都认为，如果不经常寻找未来客户就会招致失败。

The good news is that most of the experts in the sales profession rightly agree that if you do not engage in regular prospecting activity, you will fail.

youdao

一个埋头脑力劳动的人，如果不经常活动四肢，那是一件极其痛苦的事情。

A hard mental work, if not often activities limbs, that is a very painful thing.

youdao

So although I'll be largely talking from the perspective of the physicalists If you haven't become convinced of the physicalism so at least explore what will we say about death if we've decided that people are basically just bodies.

所以虽然我会经常,从物理主义的角度讨论,但如果你不信服物理主义,至少也探究一下如果我们认为,人仅仅是肉体,我们会如何看待死亡。

耶鲁公开课 - 死亡课程节选