这个洞是巢的门。

The hole is the door of the nest.

youdao

每个房间后面都有一个55加仑的鼓形炉，前面有一个门，后面有个带两个管道的烟囱洞。

Behind each chamber is a 55-gallon-drum stove with a door on the front and a chimney hole with two pipes in the back.

youdao

爱丽丝打开了门，发现门外是一条小走廊，比老鼠洞还小。她跪下来，顺着走廊往外望去，看见一个你从来未曾见过的美丽的花园。

Alice opened the door and found that it led into a small passage, not much larger than a rat-hole: she knelt down and looked along the passage into the loveliest garden you ever saw.

youdao

爱丽丝打开了门，发现门外是一条小走廊，比老鼠洞还小。她跪下来，顺着走廊往外望去，看见一个你从来未曾见过的美丽的花园。

Alice opened the door and found that it led into a small passage, not much larger than a rat-hole: she knelt down and looked along the passage into the loveliest garden you ever saw.

youdao