No smoking 中smoking 是名词还是动名词?

no smoking! NO SMOKING No smoking 中smoking 是名词还是动名词? smoking smoking 英语作文“no smoking” No smoking作文 no smoking近义词 no smoking怎么读 no smoking的音标 the sign means “no smoking”对no smoking提问 是no smoking 等于什么 怎样用PS做NO SMOKING No smoking!(同义句转换) no smoking 为什么加ing No smoking怎么说,语音答复 No smoking means we mustn't smoke here为何是NO smoking 不能是Not smoke ,No smoking,Not smoking say no to smoking和give up smoking的区别