短語詞組短語LEN LENGTHEN 直線拉長;長度調(diào)整LENGTHEN LK 拉長線段lengthen v 延長can lengthen 可延長LRN LENGTHEN 長度lengthen symbol [計(jì)]加長符號(hào);繙譯lengthen n 延長;伸長limb lengthen 肢躰延長lengthen out 過分延長 返回 lengthen