water proofing of basement

例句：

1. 1. The new building has been completely waterproofed for the winter.
   这座新楼已经做好了防水处理，准备过冬。
2. 2. The roof needs to be waterproofed before the rainy season arrives.
   雨季来临前，屋顶需要做防水处理。
3. 3.The contractors are installing a new waterproofing system on the basement walls.
   承包商正在地下室墙壁上安装新的防水系统。