Cccdna
[化] 共价闭环DNA
🗣️ 情景例句
When are Susan and Harry picking you up, Marilyn?
Susan和Harry什么时候来接你们， Marilyn
There used to be a grocery store on the corner.
过去在角落上有一个杂货店。
The train was traveling at 120 miles an hour.
火车时速一百二十英里。