With the salmon run over, they are retreating to their winter dens, up in the mountains.

随着鲑鱼洄游结束，它们撤离到山上准备过冬里。

How to find dens that may be hidden underground?

还有藏在地下巢穴，这种巢穴又怎么找？

Meet me on Thursday at three o'clock in the Tuileries Gar dens.

星期四下午3到杜伊勒利花园来见我。

Bears then enter a hibernation period and go into dens at Katmai.

然后熊进入冬眠期，进入卡特迈洞穴。

Many live in Lamu, a town with a large number of drug dens.

许多人住在拉穆，这是一个藏有大量毒品城镇。

Bears 'hibernate' in their dens during the winter months in most areas of the world.

在世界上大多数地区，冬天几个月里熊都在洞穴里“冬眠”。

But when they emerge from their dens in the spring, they can weigh over 30 pounds!

但当它们在春天从巢穴里出来时候，它们体重可以超过30磅！

But ordinary drinking dens are becoming a little drier, too, out of business sense rather than temperance principle.

但是，酒吧也开始迎合戒酒风尚了，它们是出于商业目，而不是因为节制原则。

As warmer weather arrives, be wary of bear dens and do your best to not disturb their slumber.

随着天气变暖，要小心熊，尽量不打扰它们睡眠。

Meet me on Thursday at three o'clock in the Tuileries Gar dens. Don't be angry with me, Raoul, please.

星期四下午3到杜伊勒利花园来见我。请不要生我气，拉乌尔。

All across these mountains, grizzly bears make their winter dens 10,000 feet up in the deep snow of leeward slopes.

在这些山脉中灰熊将巢筑在背风坡厚厚积雪之下。海拔高达三千米。

As soon as they leave their dens, their mothers begin teaching them how to find food.

他们一离开，他们母亲就开始教他们如何寻找食物。

In most bear dens, that job isn't actually too difficult or scary.

在大多数熊里，这项工作实际上并不太困难或太可怕。

Foxes are monogamous and live in  labyrinthine dens and tunnels, which can be up to 1000 square meters.

狐狸是一夫一妻制，生活在迷宫般洞穴和隧道中，这些洞穴和隧道面积可达 1000 平方米。

During the Oligocene and Miocene Epochs, it made huge, spiraled dens in the earth.

在渐新世和中新世时期，它在地球上形成了巨大螺旋状洞穴。

Foxes had dens in the hills and deer roamed everywhere.

狐狸在山上有巢穴，鹿到处出没。

But in recent times, the jackals have been becoming desperate, as more and more hyena dens are emptying out.

但最近几年，随着越来越多鬣狗巢穴空了，豺狼们变得越来越绝望。

They have burrows underground, nests in hollow trees, or dens in caves.

它们在地下打洞，在空心树上筑巢，或者在山洞里筑巢。

Soon opium dens spread to large cities such as London and San Francisco.

很快，鸦片烟馆蔓延到伦敦和旧金山等大城市。

Foxes, hiding in their dens, listened to the sweet and dreamy sound of the horn blown at the coming of light.

在他们穴里躲着狐狸们，倾听着这在黎明时分吹起梦幻般甜美小号声。