I might say I touched all the bases if I did what is necessary to complete a job or activity.

VOA: special.2009.04.12

To give you all the detail, there's two classes of bases that appear here.

为了尽量讲的详细,这里出现的碱基有两种类型

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It wouldn't be the same if I turned it upside down because the carbons - the rings here, the pentose's would all be turned over, the chemistry would look different and the sequence of bases would look different.

记住单链倒过来,就和原来不一样了,这是因为碳原子和糖环结构,戊糖会翻转,使得这个化学结构看起来不一样了,碱基的顺序也不一样了

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Pope brought up all his soldiers, and others were on the way from bases near Washington.

VOA: special.2009.09.24

Every cell in your body has exactly the same DNA; that is if I could stretch out all the DNA and look at the base pair sequence, the sequences of bases along all the DNA in your chromosomes, they'd be identical in all the cells.

身体内每一个细胞都有完全相同的DNA,如果我把整条DNA展开,然后检查其碱基对的顺序,你体内每个细胞中染色体上,DNA的碱基对顺序,都是完全相同的

耶鲁公开课 - 生物医学工程探索课程节选