我认为大多数梦游者没有威胁且十分正常，但是存在一部分人由于跌下楼梯而受伤。

I think the majority of those that sleepwalk is fairly harmless and quite normal actually, but there are a proportion that do injure themselves falling down the stairs.

youdao

油田经过聚驱开发后，油层动用程度得到了较大的改善，但聚驱后仍存在一部分剩余油。

After polymer flooding, producing performance of oil layers is greatly improved, but there still exist some remaining oil after polymer flooding.

youdao

人类对时间的执念——对其的节省、玩弄、浪费、丧失及掌控——似乎是人性的一部分，人类存在了多久，执念就存在了多久。

An obsession with time, saving, gaming, wasting, losing and mastering it, seems to have been a part of humanity for as long as humans have existed.

youdao

I have various -there have been lots of banking problems in the world and let me just mention some.

我有很多...,目前全球银行业存在很多问题,我来讲其中的一部分

耶鲁公开课 - 金融市场课程节选

Now you'd hope that it would be a small percentage of the population that would be affected by this but it's not.

尽管你希望只有很少一部分人,存在这个问题,但事实却不是如此

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

I'm just part of this long train of things that have happened, that I gain from it and then I can give too.

我只是存在过的一长列,事物的一部分，我从中获得，并给予他人。

普林斯顿公开课 - 人性课程节选