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
There's nothing else in the appointment book.
在工作日， 没有别的事了。
You should take the advice of your teacher.
你应该听老师的话？
The tiny village of Frinley is said to possess a 'cursed tree'.
据说弗林利这个小村里有一棵“该诅咒的树”。