比如，按标准技术的说法，北极熊就只是棕熊的一个变种。

The standard technique says, for example, that polar bears are just brown bears that happen to be white.

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我们看到一只棕熊、一只红鸟、一只绿蛙、一只黑羊、一条金鱼、一只黄鸭、一匹蓝马、一只紫猫、一只白狗和一个老师正在看我们。

We see a brown bear, a red bird, a green frog, a black sheep, a goldfish, a yellow duck, a blue horse, a purple cat, a white dog, and a teacher looking at us.

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哈洛·沃兹，一个退休者，用70 - 200毫米的变焦镜头，在阿拉斯加的克迪亚克岛上拍摄了这只棕熊。

Horowitz photographed this brown bear on Alaska's Kodiak Island. The retiree used a 70-200 mm zoom lens.

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