No chewing gum,no spitting.这句啥意思?RT“无风不起浪”?

No chewing gum,no spitting.这句啥意思?RT“无风不起浪”? chewing gum怎么读 chewing gum量词是什么? Chewing gumChewing gum chewing gum for the Chewing gum for the chewing gum的英标 shock chewing gum,这是什么? ''chewing gum的中文意思 wrigley's doublemint chewing gum口香糖 chewing gum是什么?是水果吗?急需! It is said that_____is good for our teeth.A chow gum B chewing gum C buying gum D eating gum 英语翻译The man ____in an _____is chewing the gum I used no chew gum very often改为同义句 I used to chew gum ______ __________. No no NO. No No