Maintenance system
[计] 维护系统
🧩 词语组成解析
🗣️ 情景例句
You should have seen the look on his face
真该看看他脸上的表情
A man without a smiling face must not open a shop.
人无笑脸，不要开店。
This head must have been found in Classical times and carefully preserved.
她的脑袋一定是在古希腊罗马时代就为人所发现，并受到精心的保护。