短語詞組短語reciprocate pump 往復(fù)泵reciprocate E 回報(bào)reciprocate casing 上下活動(dòng)套管to reciprocate 回報(bào)reciprocate friction 往復(fù)摩擦Should Reciprocate 應(yīng)該回報(bào)reciprocate visit 互訪reciprocate motion 往復(fù)運(yùn)動(dòng) 返回 reciprocate