There are some six subspecies of this big cat left in the world.

这种大型猫科动物在世界范围内大约还有六个亚种。

You see, there are more than a dozen subspecies of house mice worldwide.

你看，全世界家鼠有十几个亚种。

Spirit bears are actually a subspecies of black bear that due to double recessive gene aren't black at all.

白灵熊实际上是黑熊的一个亚种，由于双隐性基因，白灵熊根本不是黑色的。

Spirit bears are actually a subspecies of black bear that due to double recessive gene aren't black at all.

灵熊实际上是黑熊的一个亚种。但由于双隐性基因，灵熊的毛发一点也不黑。

One of the two flycatcher subspecies is migratory. The other stays put.

两种王霸鶲亚种中，一种是迁徙性的。另一种则待在原地。

The researchers studied the genomes of the 20 living penguin species and subspecies.

研究人员研究了20种现存企鹅物种及其亚种的基因组。

In fact, people thought that one subspecies—the Giant Canada Goose—was already extinct.

事实上，人们认为一个亚种——巨型的加拿大鹅——已经灭绝了。

In 1993 two females of a slightly different subspecies were put into his corral.

1993年，两只略有差异的亚种雌象龟被带到了他的围栏中。

The most common subspecies of tiger is the Bengal, though it's still considered endangered.

孟加拉虎是最常见的亚种，尽管它仍然被认为是濒危物种。

Both subspecies are threatened by habitat loss, pollution, and other human activities.

这两个亚种都受到栖息地丧失、污染和其他人类活动的威胁。