adj.不完全群居的,群居而无固定社会性结构的
Some movement in the building will occur as It'settles into the subsoil.
楼房沉到下层土时,楼里就会有动静.
Earthworms burrow deep into the subsoil.
蚯蚓深深地钻进底土.
They embedded the pilings deep into the subsoil.
他们把桩深深打进地基下的土中.