Historian Paul Lovejoy relates that the cultivation of kola nuts in West Africa is hundreds of years old.

历史学家保罗·洛夫乔伊说，在西非，种植可乐果已有数百年的历史。

By the late 19th century, kola nuts were being shipped by the tonne to Europe and the US.

到 19 世纪末，可乐果被成吨地运往欧洲和美国。

But it also occurs in tea, chocolate, kola nuts, guarana seeds and even the flowers of citrus plants.

但它也存在于茶、巧克力、可乐果、瓜拉那种子，甚至是柑橘类植物的花朵中。

In West Africa, people have long chewed kola nuts as stimulants, because they contain caffeine that also occurs naturally in tea, coffee, and chocolate.

在西非，人们长期以来都咀嚼可乐果来作为兴奋剂，因为可乐果含有存在于茶、咖啡和巧克力中的天然咖啡因。

Caffeine is a bitter substance found in coffee, tea, soft drinks, chocolate, kola nuts, and some medicines.

咖啡因是一种苦味物质， 存在于咖啡、茶、软饮料、巧克力、可乐果和一些药物中。

Women have traditionally been forbidden from operating marionettes, or even making them, a craft that entails complex rituals, conducted under cover of night and involving kola nuts and roosters.

传统上，女性不允许操作木偶，甚至制作也不被允许，制作包含复杂的工艺，要在夜幕的掩护下，原料涉及可乐果和公鸡。