柯林斯詞典flu /flu?/ 1. N-UNCOUNT Flu is an illness which is similar to a bad cold but more serious. It often makes you feel very weak and makes your muscles hurt. 流感[also 'the' N] I got the flu. 我得了流感。 返回 flu劍橋詞典a common infectious illness that causes fever and headache 流行性感冒，流感 a flu virus 流感病毒 to catch /get/have (the) flu 患／染／得流感 例句 She's very hot and shivery , so I think she must have flu.There are lots of people off school this week with flu. 返回 flu