我可以测量它了，因为我把它拉到了一厘米，我发现它对一个已知质量施加的加速度。

I can measure that, because I pull it by one centimeter and I find the acceleration it exerts on a known mass.

youdao

很高兴见到你，第一个已知的穿越银河系来到地球的旅行者。

It's a pleasure to meet you, the first-known trans-galactic visitor to Earth.

youdao

这是一个已知的缺陷。

This is a known bug.

youdao

Consider the following: every society which we know operates within the medium of belief or faith of some kind.

考虑下例所提：每一个社会,已知的社会，运作的媒介,多少都含有一些信念或信仰。

耶鲁公开课 - 政治哲学导论课程节选

One of the things about these plasmids that makes them very useful is that their entire base pair sequences is known.

质粒之所以有用,其中一个原因就是,它的全部碱基序列都是已知的

耶鲁公开课 - 生物医学工程探索课程节选

So first, let's start with the one that we already know, and make sure that it still works, starting from here, mainly our isolated system.

首先，我们从我们已知的一个例子入手，看看这个判据是否正确，从绝热系统出发。

麻省理工公开课 - 热力学与动力学课程节选