It turns out that getting large molecules like this, particularly large charged molecules like nucleic acids, inside of cells is not so easy.

后来证实,将这样的大分子物质,尤其是像核酸这样带有大量电荷的分子,送入细胞不是一件容易的事

耶鲁公开课 - 生物医学工程探索课程节选

You've got to be able to make this stuff and you've got to be able to make it in large quantities and we'll talk about how to make nucleic acids in large quantities a little bit later in the lecture.

首先你必须能够合成这种分子,合成出的分子数量必须足够多,我们待会儿会讲到,如何大量合成核酸分子

耶鲁公开课 - 生物医学工程探索课程节选

Nucleic acids, of which DNA is an example, are polymers of nucleotides.

核酸以及其中的DNA分子就是个例证,核酸就是核苷酸聚合物

耶鲁公开课 - 生物医学工程探索课程节选

They bring into proximity an amino acid so that instead of forming a new polymer of a nucleic acid, a polymer of an amino acids is formed.

同时它所携带氨基酸相互邻接,从而形成了一个氨基酸聚合物,而非核酸聚合物

耶鲁公开课 - 生物医学工程探索课程节选