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
She is making steady progress in her learning.
她在学习中不断进步。
It is never too late to mend.
亡羊补牢，犹为未晚。
It may also be said that rational, industrious,useful.
也可以这样说，理智的、勤劳的、有用的。