Closed chain
[医] 闭链
🧩 词语组成解析
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
chain
[tʃen]
n. 链子，链条;连锁，连续;拘束;连锁店或旅馆系列的事物;
vt. 用铁链锁住;监禁，束缚;
🗣️ 情景例句
I was wondering if you could help me. I'd like to know.
不知道你能否帮助我，我想知道。
He is playing on the see-saw in the yard.
他正在院子里玩跷跷板。
It had been wrapped up in newspaper and it contained half the money he had lost,
钱包是用报纸包着的，里面有他丢失的钱的一半，