Right now,officials say nine groups are operating federally approved mobile units.

VOA: special.2010.08.03

Everything's got to be in the right units.

每个数据都要有合适的单位

耶鲁公开课 - 基础物理课程节选

And so, even by units analysis, if the units come out right, you've got a good shot that unless you've really, really messed up, that the answer is going to be right.

甚至在单位分析中，如果你的单位正确，你就能做的很有条理否则会一团糟，而注意了单位你的答案才有可能正确。

麻省理工公开课 - 固态化学导论课程节选

But sometimes I might not write the units but I've earned the right to do that and you guys haven't so you'll have to keep track of your units.

有时候我可能会省略单位,我可以这么做,但你们不行,你们要认真地把单位写清楚

耶鲁公开课 - 基础物理课程节选

Cross-linked is not the right word-- that is chemically bonded with repeat units to make large molecules so that when you have a bunch of large molecules together they have certain physical properties like the solid property of the plastic that you're sitting on.

交联这个词不确切,应该是由化学键连接的,重复单位构成大分子,当许多分子聚合在一起后,它们就会具有某种物理特性,就像你们正坐着的,塑料一样,具有固体特性

耶鲁公开课 - 生物医学工程探索课程节选