Perfective maintenance
[计] 完善性维护
🧩 词语组成解析
a. 完成的, 完成时的\\nn. 完成时
🗣️ 情景例句
I know that you do a very big international business,
我知道贵公司在国际贸易方面的生意做得很大，
Oppression maketh a wise man mad.
人处压迫下，聪明也会疯。
Is there any way of ensuring we'll have enough time for our talks?
我们是否能保证有充足的时间来谈判？