Currently,the best explanation for the loss of methane is that it chemically reacts with dust in the atmosphere.

VOA: special.2009.12.30

If I could find the unique set of proteins that correspond to those genes I could define chemically what the cell is.

而我又能找到和这些基因对应的,这种独特的蛋白,我就能通过化学手段确认这是哪种细胞

耶鲁公开课 - 生物医学工程探索课程节选

It turns out that neurons relate to one another chemically in a kind of interesting way.

原来神经元之间,是通过奇妙的化学方式,而相互联系的

耶鲁公开课 - 心理学导论课程节选

This metal form is chemically treated before being covered with ink and then pressed onto paper.

VOA: special.2009.09.02

Since it has no electrons, it must be chemically inert.

因为它没有电子，所以具有化学惰性。

麻省理工公开课 - 固态化学导论课程节选

Its creators said it is the longest chemically designed DNA structure ever produced in a laboratory.

VOA: special.2010.07.20

Hopefully their immune systems will respond to it like the real virus but it won't be capable of replication because we've chemically cross linked it so it can't go through its life cycle.

人体的免疫系统,就会对该病毒产生免疫应答,但灭活的病毒不能复制,因为我们已经对它做了化学处理,使它无法进入生命周期

耶鲁公开课 - 生物医学工程探索课程节选

Chemically,elements like potassium and aluminum are added and taken away.

VOA: special.2009.09.14

Chemically this is the smallest unit of charge.

化学上说，这是电荷的最小单位。

麻省理工公开课 - 固态化学导论课程节选

They are chemically inert.

它们的化学性质不活泼。

麻省理工公开课 - 固态化学导论课程节选

So, neurons communicate to one another chemically.

这样,神经元之间便通过化学方式,进行信息的传递

耶鲁公开课 - 心理学导论课程节选

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