complimentary copy

基本解释

We are pleased to offer you with a complimentary copy of this research, available now.
我们很高兴为您提供此研究报告的免费副本，现已可供下载。
Each team participating in the contest will receive one complimentary copy of this book.
每一个参赛小组都将会收到一本留作纪念。
In desperation, I turned to my complimentary copy of the Sky Mall catalog and began to read.
无奈之下，我开始阅读起免费赠送的Sky Mall目录的副本。

It's called cDNA or complimentary DNA to indicate that it's a copy, a complimentary copy of the messenger RNA.
它叫cDNA或者互补DNA,意味着它是一个拷贝,一个信使RNA反转录得出的DNA拷贝
耶鲁公开课 - 生物医学工程探索课程节选
When you think about a gene or a transcript, the messenger RNA copy of a gene, you know that for every sequence of a nucleic acid there's a complimentary sequence.
当你们考虑一段基因或者一个,转录一段基因的mRNA拷贝,你们知道每个核酸序列,都有互补序列
耶鲁公开课 - 生物医学工程探索课程节选

Consumers also can order one complimentary copy of their credit report per year from Equifax, Experian and TransUnion at annualcreditreport.com.
FORBES: Credit Scores Often Unreliable, Warns Consumer Financial Protection Bureau