Dialdehyde
[机] 二醛
🗣️ 情景例句
I don't know for sure.
我不太清楚。
He who has not tasted bitter knows not what sweet is.
不吃苦中苦，哪知甜中甜。
When the plane arrived, some of the detectives were waiting inside the main building while others were waiting on the airfield.
当飞机到达时，一些侦探等候在主楼内，另一些侦探则守候在停机坪上。