flu/fluː/

n. an infectious illness like a very bad cold that causes fever and weakness

n. [U] 流行性感冒，流感：He has (the) flu. 他患了流感。

◇catch（或get） the flu 患流感

◇a flu virus 流感病毒

同音 flew; flu

常犯错误

✗ He has caught a flu.

✓ He has caught (the) flu. 他感冒了。