scratch vt.抓；挠 He scratched the insect bite on his leg (with his nails).他（用指甲）在他腿上搔虫咬的地方。
sneaky adj. 鬼祟的, 卑鄙的
bug spray 喷雾杀虫剂put up with 容忍，忍受
【拓展词汇】mosquito net 蚊帐
rash n. 疹
malaria n.疟疾
bug zapper灭虫器
pesticide n.杀虫剂
