Foods high in tryptophan include: Milk, eggs, meat, nuts, beans, fish, and cheese. Cheddar, Gruyere, and Swiss cheese are particularly rich in tryptophan.

富含色氨酸包括：牛奶，蛋类，肉类，坚果，豆类，鱼，芝士，干酪，瑞士格里尔干奶酪，尤其是瑞士芝士色氨酸含量特别高。

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In 1875, the Swiss invented the method of milk chocolate, which has now see chocolate.

1875年，瑞士发明了制造牛奶巧克力的方法，从而有了现在所看到的巧克力。

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Swiss person amounts to Niaier Peter to be made chocolate of the first milk, up to now full 120 years.

世界上第一块牛奶巧克力是瑞士人达尼埃尔·彼得制作出来的，至今整整120年了。

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