英语语法分析

Most of his friends are now belowground.

他的大多数朋友现在都在地下。

The perennial rhizomes formed closely crowed belowground networks.

多年生根茎在沙基质中形成多层密集网络结构；

Belowground biomass in light degraded grassland is higher than in severely degraded grassland.

轻度退化草地地下生物量明显高于退化草地。