Mei
abbr. 技术细则手册（Manual of Engineering Instructions）；金属工程学会（Metals Engineering Institute）
🗣️ 情景例句
Get to the heart of the matter.
请讲问题的实质。
There isn't much room for doubt in this matter.
关于这件事，不大有质疑余地。
That's right. And the air today is nice and clean.
对。今天空气很清新。