词汇与表达：dissipate

dissipate
When something dissipates or when you dissipate it, it becomes less or becomes less strong until it disappears or goes away completely.
The tension in the room had dissipated...
房间里的紧张气氛消失了。
heat dissipation.
散热

When someone dissipates money, time, or effort, they waste it in a foolish way.
He is dissipating his time and energy on too many different things...
他在太多不同的事情上浪费时间和精力。