Multigrade
a. (润滑油)多级通用的,多品位的,稠化的
🗣️ 情景例句
I have to leave. I feel terrible, but...
我得走了。真是糟糕透了， 但……
It is better to fight for good than to rail at the ill.
与其抱怨，不如积善。
Good afternoon!
下午好！