Closed circuit operation
[建] 通路操作
🧩 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
🗣️ 情景例句
Spring has sprung and all the flowers are blooming.
春天来了。花儿都开了。
He phoned to cancel the meeting.
他打电话来取消会议。
If you don't work, you will fail to pass the exam.
如果你不学习，你考试就会不及格。