heat exhaustion是什么意思?

意思是: 热衰竭

例句

John was feeling dizzy and had a headache, so he went to the hospital and was diagnosed with heat exhaustion after working outside in the sun all day without drinking enough water.
约翰在外面工作整天没喝足够的水, 感到头晕目眩, 去了医院, 诊断为热力衰竭.