itchy a. 痒的
I must have been bitten by a flea, my arms are itchy.
我一定是让跳蚤咬了，胳膊很痒。
come down with (something) 生病，染上……病
lightheaded a. 头昏眼花的
chicken pox n. 水痘
contagious a.(有)传染性的
rash n. 皮疹
allergy n. 过敏症
in the meantime与此同时
biohazard n. 生物危害
blow (something) out of proportion 夸大某事
【拓展词汇】
flu n.流感
cold n.感冒
fever n. 发烧
nauseous a.恶心的
allergic a.过敏的
