vt.& vi.挖掘(洞穴),挖洞
vi.翻寻
n.地洞
Earthworms burrow deep into the soil.
蚯蚓钻土很深。
The larvae burrow into cracks in the floor.
幼虫钻进了地板的缝隙里。
As soon as the two chicks hatch, they leave the nest burrow.
两只小鸟一出壳就离开了巢穴。