Mtm
abbr. 动量指标；材料转移备忘录（Material Transfer Memorandum）；操作方法时间测量（Methods Time Measurement）
🗣️ 情景例句
Hi, Son.
嗨 儿子。
I can paint.
我会画。
That's why we were getting anxious about you.
所以我们才为你们担心。