internal drainage短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 内排水,内部排水,内泄油 The use of catch basins and pipes as well as other internal drainage techniques has only fostered a less than“ studious” attempt at developing a proper routing. 集水井与管道的运用和其它排水技术的运用也仅仅是在做一个好的规划方面鼓励了一点“热心的”尝试。 igolfyou