英语语法分析

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

到19世纪末，可乐果被成吨成吨地运往欧洲和美国。

Early humans seem to have played a major role in finishing offnine other mammal species that weighed over a tonne.

早期人类似乎扮演了终结者的角色，使其他九种超过一吨的哺乳动物彻底从地球上消失。

The study showed that a single new desktop machine created emissions of almost half a tonne during its manufacture.

该项研究表明，一个新的台式电脑在其生产过程中要产生近半吨的碳排放量。