Definition: when someone's body temperature rises because they are ill Level: B1
他头痛并发高烧。
He's got a headache and a high ___fever.
我了解到她独自和弟弟在一起，他发烧了。
I understood that she was alone with her brother and he had a ___fever.
如果你发烧了，应该休息并多喝水。
If you have a ___fever, you should rest and drink fluids.
