an animal's den
用所有格表示洞穴属于某种动物，也可用 its den 回指。
The fox's den was hidden deep in the hillside.
那只狐狸的洞穴藏在小山深处。
兽穴；兽窝；洞穴
dens — plural of den
脏乱场所；匪窝；藏身处；舒适的小房间；私室；书斋；幼童军小队；（孩子用家具、毯子搭的）游戏堡垒；山坡或岩石中的小洞穴,尤指野生动物用作庇护或隐蔽的洞穴
a wild animal's home, cave, or shelter
山坡或岩石中的小洞穴,尤指野生动物用作庇护或隐蔽的洞穴
A small cavern or hollow place in the side of a hill, or among rocks; especially, a cave used by a wild animal for shelter or concealment.
野兽的巢穴
the habitation of wild animals
肮脏或破败的地方；藏身处
A squalid or wretched place; a haunt.
藏身处；匪窟
a hiding place; usually a remote place used by outlaws
不用于正式招待的舒适房间
A comfortable room not used for formal entertaining.
幼童军团小队
a unit of 8 to 10 cub scouts
堡垒的同义词(用家具等即兴搭建的游戏结构)
Synonym of fort (“structure improvised from furniture, etc. for playing games.”).
同龄幼童军一起进行项目的小组
A group of Cub Scouts of the same age who work on projects together.
The bear emerged from its den after a long winter.
经过漫长的冬天，熊从它的洞穴里出来了。
用法提示：这里 den 是名词，意为野兽栖息的洞穴。
We found a fox den hidden among the rocks.
我们在岩石间发现了一个隐蔽的狐狸洞穴。
用法提示：这里 den 是名词，指野兽（狐狸）的巢穴。
The cubs stayed safe inside the lion's den.
幼崽们安全地待在狮子的洞穴里。
用法提示：这里 den 是名词，表示野兽（狮子）的栖身处。
用所有格表示洞穴属于某种动物，也可用 its den 回指。
The fox's den was hidden deep in the hillside.
那只狐狸的洞穴藏在小山深处。
of 后接表示人的名词时，多指从事非法或不良活动的场所，含贬义。
The police raided a den of thieves near the docks.
警方突袭了码头附近的一个贼窝。
指家中舒适而私人的房间，不用于正式待客。
He spends every evening in his den, reading old books.
他每天晚上都待在自己的书房里读旧书。
固定习语，指勇敢进入危险或充满敌意的处境；词序固定，不说 the den of the lion。
She walked into the lion's den and faced her critics.
她走进虎穴，直面批评她的人。
grammar · medium
易错句子The fox hides in den during the winter.
正确表达The fox hides in a den during the winter.
den 是可数名词，单数形式泛指时必须加限定词 a（或 the/its 等）；汉语名词前没有冠词，所以中国学习者常把冠词漏掉。
grammar · medium
易错句子We found three den near the river.
正确表达We found three dens near the river.
den 是可数名词，前面有基数词或 many 时须用复数 dens；汉语名词不随数量变化，所以学习者常忘记加 -s。
grammar · medium
易错句子The bird made a den in the tree.
正确表达The bird made a nest in the tree.
den 专指熊、狐狸、狮子等兽类的洞穴；鸟类的巢只用 nest，不能用 den，这是汉语“窝”一字对应多个英语词的常见错配。
熊的洞穴
We spotted a bear's den near the hiking trail.
我们在远足小径附近发现了一个熊洞。
贼窝
The police raided a den of thieves in the old warehouse.
警方突袭了旧仓库里的一个贼窝。
赌窝；地下赌场
The back room was a gambling den hidden from the street.
后面那个房间是一个隐蔽的地下赌场。
鸦片馆
In the nineteenth century, opium dens were common in some port cities.
十九世纪时，鸦片馆在一些港口城市很常见。
罪恶的渊薮；藏污纳垢之地
The nightclub had a reputation as a den of iniquity.
那家夜总会以藏污纳垢而闻名。
舒适的小房间；温馨的私室
He likes to read in his cozy den after dinner.
他喜欢晚饭后在自己舒适的小房间里读书。
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