working arm造句

例句与造句

1. rna was once seen as the working arm of dna, which carries the genetic code, but studies show it can " silence " genes and even help cut them up
   曾经认为rna是脱氧核糖酸的工作臂，其携带遗传密码，但现在研究表明，它能使基因“沉默”，甚至帮助去掉某些基因。
2. It's difficult to find working arm in a sentence. 用working arm造句挺难的