Cma train
[机] 凸轮机构
🧩 词语组成解析
abbr. 军事委员会（Committee of Military Affairs）；特许医学助理医师（Certified Medical Assistant）；中华医学会（China Medical Association）；基督教传教联盟（Christian and Missionary Alliance）
🗣️ 情景例句
I'd better unpack.
我还是先把行李打开吧。
It's been 5 years since I last saw you.
我已5年没见你了
He can't make it today. He has to stay at home.
他今天不行了。他得呆在家里。