They kept a copy of that and they filed it away, so the government had a complete record of your payments into the system.

邮局留下存根并且归档保存，这样政府就能完整的记录下,你的支付情况。

耶鲁公开课 - 金融市场课程节选

When you go to sign into the class you will get a copy of this.

当你们登记上这门课的时候,你们会得到一份。

麻省理工公开课 - 固态化学导论课程节选

Certain segments of DNA are being converted into RNA, and whereas in replication, you have to copy the whole genome, the whole - all of the chromosomes, all of the DNA contained in the chromosomes of the cell in order to completely replicate it; transcription only works on particular sequences of DNA.

特定的DNA序列被转录为RNA,在复制的过程中,整条染色体都被复制,包括其中的全部DNA序列,都被分毫不差地复制下来,以保证复制的完整性,而转录过程只发生在特定的DNA序列上

耶鲁公开课 - 生物医学工程探索课程节选