Tetrolic acid
[化] 2-丁炔酸
🧩 词语组成解析
🗣️ 情景例句
It just depends on a number of things.
这得靠许多因素才能决定。
I know the boy whose father is a college president.
我知道那个男孩的父亲是大学校长。
The big clock which used to strike the hours day and night was damaged many years ago and has been silent ever since.
教堂的钟很大，以前不分昼夜打点报时，但很多年前遭到毁坏，从此便无声无息了。