wave at 和wave to的区别是什么,希望有例子,

wave at和wave to区别 wave to sb.和wave at sb.有什么区别 wave at 和wave to的区别是什么,希望有例子, wave to sb.与 wave at sb.有什么区别吗? wave和shake hand的区别 to wave sth at sb wave to wave to He wants to ( )Rian who is form Korea.----- A.wave B.wave at C.wave form 怎么区别是say goodbay to sb还是wave? 世界杯的主题曲是wave wave还是 waving flag 英文的wave attendance wave attendance是什么意思啊?Lenovo guests will enjoy different sporting events according to their wave attendance.这是整个句子！ WAVE和wav有何区别 wave at sb. wave to your friend wave to sb.例句? wave to the 请问纯正弦波（pure sine wave）和修正正弦波（modified sine wave）什么区别?