Closed-chain
[数] 闭链\\n闭锁链条
🧩 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
It's his first venture into business.
他初涉商界。
I am working for a trading company as an assistant manager in the overseas distribution section.
我在一家贸易公司的海外行销部门做经理助理。
Well, I've recently started biology.
喏，我最近开始学生物学了。