do not wave at no cost怎么理解?

do not wave at no cost怎么理解? 如何翻译do not wave at no cost Wave.I can not do without you.Did you know ... NO ,not at i do not no. Do or not do,no Do you mind my sitting here?A.Yes,I do B no,not at all No wind ,no wave急 Do not laugh at wave at sb. wave at和wave to区别 At all times no matter what I do not open up Duck hand. at all times no matter what I do not open up duck hand , Do you mind if I smoke here?_____(No,please don't/Not at all) do not ask me more ,i have no clue at all这句话语法错误么? Do you mind my smoking here?为什么不能回答为什么不能回答No,not at all 或者是no,better not只能说是not at all或better not是不能回答no吗,那yes可以回答的吗? not to do sth的用法为什么在 my mother tells me -------[not laugh]at others.要用no to laugh do not participate at this