求翻译：其中以黑色幽默最为著名。美国人很擅长在不利的情况下保持开玩笑的习惯，或者说，是把糟糕的事情用幽默的口吻表达。这缘于他们良好的心态和个性。是什么意思？

Of which the most famous black humor. Americans are very good at in the adverse circumstances to maintain the habit of joking, or that is the worst thing a humorous tone, expression. This is due to a good attitude and personality.

It is famous for black humor. Americans are very good at keeping the bad joke about the situation of the customary, or in other words, is the worst thing the tone with humor. That is because of their good heart and personality.

In which by black humor most famous.The American very much excels at the custom which maintains in the disadvantageous situation cracks a joke, or said, is uses the too bad matter the humorous tone expression.This reason in their good point of view and individuality.

With black humor is most famous. Americans are very good at jokes under the adverse circumstances of habit, or that the expression is a bad thing with a humorous tone. This due to their good attitude and personality.

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