In a hot summer day, being in great heat for a long time may cause you feel uncomfortable, sick, nauseous, dizy and sometimes even lose consciousness. In Chinese, we call it "中暑".
zhòngshǔ
中暑
heatstroke
Wǒ zhòngshǔ le.
我中暑了。
I've got a sunstroke.
Zài tàiyang xià chángqī gōngzuò kěnéng huì zhòngshǔ.
在太阳下长期工作可能会中暑。
Working under direct sunlight for a long time may give you a sunstroke.