到19世纪末，可乐果被成吨成吨地运往欧洲和美国。

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

youdao

有十几年了，我一直在思考为什么20世纪会被描述成如此的残酷和动荡。

For more than a decade, I pondered the question of why the 20th century was characterized by so much brutal upheaval.

youdao

早在1611年，第一根猛犸象象牙在伦敦出售。 到18世纪，大量象牙被发掘，加工成国际象棋、台球、钢琴键、甚至鼻烟壶。

The first tusk was sold in London as far back as 1611 and by the 18th century tusks were so abundant they were being transformed into chess sets, billiard balls, piano keys and even snuffboxes.

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