如何翻译do not wave at no cost

如何翻译do not wave at no cost do not wave at no cost怎么理解? 请问大家Do not all speak at once!One at a time,please.如何翻译啊? Wave.I can not do without you.Did you know ... 翻译：Do not attend to two things at a time. not necessary在英文选项中如何翻译?Do you comply with regulatory values?1. Y 2. Not necessary 3.N其中not necessary应译为什么? Do not laugh at wave at sb. wave at和wave to区别 not at all翻译 翻译not at all .You will not have to keep looking at the clock so you do not oversleep.翻译 I absolutely do not.这句话该如何翻译, do not participate at this to wave sth at sb At the end of a wave of something new这个怎么翻译? wave to sb.和wave at sb.有什么区别 Her father ( ) （not do）housework at home请翻译并解析