题目内容：

walk by 和 bargain

优质解答

walk by :走过,闲走例如：I go out of my way to walk by the building,listening for sounds,smelling the air for rot.我在那座建筑物附近走来走去,听听动静,嗅嗅空气中有没有传来腐烂的气息.bargain：讨价；讲价S...