Ethanetetrayl
[化] 联亚甲基; 联二亚甲基
🗣️ 情景例句
When does he arrive?
他什么时候到？
I'll make it up to you.
我会赔偿的。
The further off this solid obstruction, the longer time will elapse for the return of the echo.
固体障碍物越远。回声返回所用时间就越长。