几百年来，居住在安地斯高山上的居民喜爱嚼食古柯叶，其中的生物碱成分是一种温和的兴奋剂，有助于抵抗寒冷和饥饿。

For centuries, people who live in the high Andes have chewed coca leaves, whose alkaloids act as a mild stimulant and help to ward off cold and hunger.

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坏处：除了对西红柿的喜爱，西红柿的茎和叶含有生物碱苷，这种有毒物质会导致头疼、胃疼、呼吸衰竭以及麻木。

The bad: Beyond the heartburn of the tomato itself, tomato stems and leaves contain glycoalkoloids, a poison that causes headaches, stomach aches, cases of respiratory depression, and loss of feeling.

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虽然果肉本身不含毒素，但其茎和叶却饱含一种叫做配糖生物碱的化学物质。

Though the fruit itself doesn't contain poison, the stem as well as the leaves contain a chemical known as glycoalkaloid.

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