underground canal的意思|示意

There is more pollution linked to fuels and the drinking water is compromised, we should not forget that many villages rely on the water from the canal, which is filtered underground to drink.

有许多的污染是燃料所造成，而且会影响饮用水质，我们不要忘记许多村民，必须仰赖运河里的水过滤饮用。

The high level underground water causes damages on the concrete board of the canal such as seep, freezing, sulfate erosion and swelling by swelled ground.

由于地下水位高，造成地下水对渠道混凝土板的渗透破坏、冻胀破坏、硫酸盐侵蚀破坏和膨胀土膨胀破坏。

Hot air is drawn into the underground canal, where the water is kept cool because it is so far beneath the surface.

热空气被牵引至地下管道，那里的水因为远离地表而总是很凉。