How close is close enough?

到底多近才算够靠近呢？

youdao

I've just come across the smell of it, and it's close by here, really quite close.

我刚刚闻到了它的味道，它就在附近，非常近。

youdao

He was too close to the door to close it.

他离门太近以至于关不了门。

youdao

But the risk rises to one in every 40 people among those who have a close family member with the disease.

VOA: special.2009.01.06

So, when we get really close together, granted, there is a net positive negative charge with a Coulombic force of attraction.

当它们真正离得很近时，假设有一个带正负电的电荷,带有库仑引力。

麻省理工公开课 - 固态化学导论课程节选

practice our, you know, talking skills. We get really close because there's not that many people in the class.

练习我们的表达能力。因为上这个课的人不多，所以我们之间变得很亲近。

学习外语的原因 - SpeakingMax英语口语达人

' It's something that's very close to us because we're very close with South Korea.

BBC: Magazine

They close early to save on electricity, or close early due to slower business.

FORBES: Casual Summer Work Environment Kills Productivity and Profits

Animals kept in close confinement, reared at close quarters, will inevitably infect one another very quickly.

BBC: The pointless slaughter?