Mathml
数学标记语言（mathematical markup language ）
🗣️ 情景例句
Can't you do something about it?
你就不能想点办法吗？
Must be.
一定是。
The morning passed rapidly and Frank was about to leave when he noticed a large packing case lying on the floor.
上午很快过去了，弗兰克正准备离去，突然看见地板上放着一只体积很大的货箱。