If a nonnative plant species invades an above-ground community of flora and fauna, it can alter links between the native above-ground community and the below-ground soil community.
如果一种外来植物入侵了地上的动植物群落，就会改变地上群落和地下土壤群落之间的联系。
2
They have designed a system which pumps up water from nearly 1,000 feet belowground.
他们设计了一个能从地表以下1000英尺处抽水的系统。
《柯林斯英汉双解大词典》
3
Another way of countering drought is to have a limited amount of mass above ground and to have extensive root networks belowground.