Covalently closed circular dna
[化] 共价闭环DNA
🧩 词语组成解析
adv. covalence（共有原子价, 共价）的变形
closed
[klozd]
adj. 关闭着的，封闭着的;密闭着的，保密的;<美>准备好了的，定了契约的;
v. “close”的过去式和过去分词;
clos=close关闭+ed已...的→关闭了的
DNA
[,di:,en'ei]
abbr. did not attend 没有参加;does not answer 不回答;
🗣️ 情景例句
And you saved it for me, didn't you, Mother?
也留着要给我， 对吗， 妈妈？
Let's cross the bridge when we come to it.
既来之，则安之。
Before we had time to worry about what might happen, we were back on the plain again.
我们还未来得及担心后果，车已重新开上了平地。