Closed operation
[计] 闭运算
🧩 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
Don't open the door if you don't know who it is.
如果有陌生人敲门不要开门。
I worked at the shipping company this morning.
我今早在船公司工作。
It's over there on the right.
右边那儿就是。