for the mainfɔ:ðəmein短语²⁶³³⁸ 基本例句 adv.总的来说大体上;大致 Others cluster around the ventilation valve for the main pipeline that stick up out of the ground from place to place, trying to catch the small amounts of water leaking out. 还有另一些人，他们成群地围在立于地面外主管道的通风口处，试图接到一点渗出来的水，这种景象随处可见，。 yeeyan