fainty

adj.无力的,昏晕的

微弱的；虚弱的；晕厥的

形容词

1、She suddenly felt fainty and had to sit down.
她突然感到虚弱，不得不坐下来。
2、The patient experienced a fainty spell after standing up too quickly.
病人站起来太快后晕倒了一会儿。