There are black bears and brown bears.
有黑熊，还有棕色的熊。
Black bear cubs use trees for defense, whereas brown bears and polar bears, which regularly inhabit treeless environments, rely on aggression to protect their cubs.
黑熊幼崽用树来防御，而经常生活在没有树的环境中的棕熊和北极熊则依靠攻击性来保护它们的幼崽。
黑熊吃什么作食物？
North America kept its deer, black bears and a small type of bison, and South America its jaguars and llamas.
北美保留了鹿、黑熊和一种小型野牛，南美洲保留了美洲豹和美洲驼。
With a habitat that includes much of North America, black bears are seen fairly often in this region of New Jersey.
由于他们的栖息地包含了北美的绝大部分，黑熊在新泽西州的这个地区经常被看到。
Black bears feed on leaves, herbs. Fruit, berries, insects, fish, and even larger animals.
黑熊以树叶、草、树根、水果、浆果、昆虫、鱼，甚至更大的动物为食。
Black bears feed on leaves, herbs, roots, fruit, berries, insects, fish, and even larger animals.
黑熊以树叶、草、树根、水果、浆果、昆虫、鱼，甚至更大的动物为食。
In our zoo there are also brown bears, black bears and white bears.
我们的动物园里还有棕熊、黑熊和白熊。
Black bears are the smallest of all American bears, ranging in length from five to six feet, weighing from three hundred to five hundred pounds.
黑熊是所有美洲熊中最小的，5 ~6英尺长，300 ~ 500磅重。
Black bears can live as long as thirty years in the wild, and even longer in game preserves set aside for them.
黑熊在野外可以活到长达30年，在专门的保护区中甚至能活得更长。
Alaskan black bears hibernate for up to seven months a year, during which time they do not eat or drink, before waking up in virtually the same physical state they fell asleep in.
阿拉斯加黑熊每年冬眠7个月，冬眠期间不吃不喝，而且一直保持睡眠时的体力直到醒来。
他们可不是黑熊。
In Baimaxueshan for example, while the population of the Yunnan Golden Hair Monkey does not show a clear change, the populations of black bears and porcupines have increased.
例如，在白马雪山保护区，尽管云南金丝猴种群数量并没有明显变化，但黑熊和豪猪的种群数量均有所增加。
It also contains Asiatic black bears, egrets and, according to some, an extremely rare subspecies of the Siberian tiger.
在这片区域内还有亚洲黑熊、白鹭。据说这里还栖息着西伯利亚虎的某个极稀有亚种。
Relying on mechanisms that scientists would love to understand, black bears spend five to seven months without eating, drinking or taking a single bathroom break.
依靠着科学家们希望能够理解的机理，黑熊可以在五至七个月中不吃不喝，甚至不排泄废物。
He and his colleagues get such abundant data by volunteering to take in black bears that have developed a taste for foraging close to people and are about to be killed as menaces.
他和他的同事自愿收养了几头养成了在人类附近生活，本将因其威胁性而被杀害的黑熊，从而获得了大量数据。
That's the message state wildlife officials are sending residents of Colorado communities besieged by hungry black bears with a taste for fresh-baked pies and other fattening human fare.
这是野生动物官员向科罗拉多州一些社区传出的讯息，饥饿的黑熊在这些社区的附近活动，对新鲜出炉的馅饼和其他能填饱肚子的美味佳肴垂涎欲滴。
Full-grown black bears weigh between 200 and 600 pounds (90 and 270 kilograms) and measure as much as 6 feet (1.8 meters) long.
成年黑熊重达200至600磅(90到270公斤)并且又6尺(1.8米)长。
Full-grown black bears weigh between 200 and 600 pounds (90 and 270 kilograms) and measure as much as 6 feet (1.8 meters) long.
成年黑熊重达200至600磅(90到270公斤)并且又6尺(1.8米)长。
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