Mbtu
abbr. thousand British thermal units 千个英国热量单位（代号）
🗣️ 情景例句
Bye, take care.
保重。
Youth is a blunder; manhood a struggle, old age a regret.
青年冒失莽撞；成年发奋图强；老年遗憾懊丧。
As soon as I tap on the window, you must stop within five feet.
我一敲车窗，你必须把车停在5英尺之内。