Cccdna
[化] 共价闭环DNA
🗣️ 情景例句
I think you could use super glue to fix this cup.
我认为你可以用强力胶来修补这杯子。
I've had this cough for a week now.
我这样咳嗽已经一周了。
He sent the journalist two more faxes, but received no reply.
他给记者先后发去两份传真，但对方毫无反应。