Such a rhythm whose period is approximately—but not exactly—a day is called circadian.

这种以近似于——但不完全是——一天为周期的节律，叫做昼夜节律。

youdao

Yes, it's black but not exactly plain black—it has some narrow stripes down it, sort of grey.

是的，它是黑色的，但不完全是纯黑色，它有一些窄条纹，有点灰色。

youdao

In centigrade, your temperature is 39℃, which is a bit high, but not exactly boiling point.

你39℃摄氏度的体温是有点高，但完全没达到沸点呢。

youdao

Let us say I want to sell my car but I do not know exactly how much it is worth.

VOA: special.2009.04.12

And then our drop date is normally, I'm not exactly sure when, but it's actually probably in November,

然后退课的日子通常是，我不确定什么时候，不过其实大概是十一月，

对于返校日 - SpeakingMax英语口语达人

It is not exactly the same thing, but there is something real that it grows, that I'm not responsible for it that allows us simplicity.

并不是完全一样的事情，但是有一个事实,那就是树在生长，而并不是我让它在生长,就是这样简单。

普林斯顿公开课 - 人性课程节选

Two years ago my neighbor went to China, but not exactly for a sightseeing vacation.

FORBES: Beijing Takes On the Vatican

Reactionary--but not exactly in a way that lived up to his acres of bad press.

FORBES: Medialand

In a few minutes, dieting for a long life but not exactly a full one.

NPR: Slate's Jurisprudence: Moussaoui's Insanity Defense