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
I'd like to thank Harvey Carlson
我非常感谢Harvey Carlson
No, it isn't. Yes, it is.
不，它不是。 是的，它是。
that people have for years assumed that the process of losing vigour with time,
多年来就已认识到。生命力随着时间流失而丧失活力，