点覆盖问题是一个重要的有实际意义的难解问题。

Point covering problem is hard to solve with great actual value.

youdao

但要做到这一点，就必须覆盖贫穷人群。

But to do so, you must reach the poor.

youdao

植被覆盖的土地依然绿意盎然，暗蓝色的点状分布为水源。

Plant-covered land is still green and water is dark blue.

youdao

但后来它逐渐被风沙覆盖，现在只剩下一点废墟。

But then it disappeared under the sand. There are just a few ruins left.

youdao

但后来它逐渐被风沙覆盖，现在只剩下一点废墟。

But then it disappeared under the sand. There are just a few ruins left.

youdao