Security maintenance
[计] 安全维护
🧩 词语组成解析
🗣️ 情景例句
We just don't see each other anymore.
我们彼此差不多见不到面了。
He that boasts of his own knowledge proclaims ignorance.
夸耀知识实乃无知。
We've got to think of ways of changing people's habits.
我们得想想办法，改变人们的习惯。