At present the world most coffee beans mainly come from three original varieties, they are Arabica beans, Robusta beans and Liberian beans.

目前全世界最重要的咖啡豆主要来自阿拉比卡，罗伯·斯塔及利比里亚这三个原品种。

youdao

As we mentioned earlier, in Italy, some robusta beans will often times be added for the additional crema, caffeine, and complexity they contribute to the blend.

在文章前面提到过，在意大利，一些罗伯斯特咖啡豆被添加到混合咖啡中，以增加其油脂、咖啡因以及咖啡风味的复杂性。

youdao

Death Wish Coffee is made from Robusta beans which contain 'nearly double the amount of caffeine' than the Arabica beans used by high-end roasters, according to experts.

据专家说，“死亡之愿”咖啡是由罗布·斯塔咖啡豆制成的。同使用高端烘焙器处理的阿拉比卡咖啡豆相比，这种咖啡豆的咖啡因含量还要多两倍。

youdao

By contrast, steeped or percolated coffee made with robusta beans is very strong in caffeine.

ECONOMIST: Espresso coffee

India's status as the world's fourth-largest exporter of robusta beans after Vietnam, Brazil and Indonesia could be changed by domestic demand.

WSJ: India's Taste for Coffee to Affect Bean Prices

Around 70% of production is the robusta type of beans, the more bitter and cheaper variety than arabica.

WSJ: India's Taste for Coffee to Affect Bean Prices