昏晕的用法和样例：
例句
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摇滚音乐会场里又热又拥挤。突然我的脑子里天旋地转，于是我昏晕过去。
It was terribly hot and crowded at the rock concert. Suddenly, everything went round and round in my head and I fainted. -
我看到他突然脸色变白，急忙得去扶他，他已一阵昏晕，从椅上跌倒在地板上。
I saw him suddenly change colour, but before I could reach him he had slipped off his chair on to the floor in a faint.
