The white one's name is Swan and the brown one I call it Bear.

白色的叫“天鹅”，棕色的叫“小熊”。

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A swan is white.

天鹅是白色的。

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"This swan is so white," he thought, "and I am so black. It must be the happiest bird in the world."

“这只天鹅是那么白，”他想，“而我是那么黑。它一定是世界上最幸福的鸟了。”

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The white swan - with its long,graceful neck - is among the most beautiful of birds.

VOA: special.2010.04.11

He called it The Black Swan because if you look at swans, they're always white.

他称之为黑天鹅现象,因为我们看到的天鹅总是白色的

耶鲁公开课 - 金融市场课程节选

Bobby Curran had been drinking in the White Swan when Des Cronin and his brothers came by.

NEWYORKER: Something Like Happy

Bernie, who marketed himself as the ultimate white swan, molted into the blackest swan of all, bar none.

FORBES: Managing Money

Natalie Portman is Nina, a young ballerina in a Lincoln Center company who has the temperament to dance the virtuous White Swan but is too frigid to dance the Black Swan.

NEWYORKER: Black Swan