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
He turned over his company to his son last year.
去年他把公司交给儿子管理。
Do you like the soft touch of snowflakes on your face?
你喜欢柔软的雪花触到脸上时的感觉吗？
A week later, the editor at last received a fax from the journalist.
一周之后，编辑终于接到记者的传真。