The world's longest canal: the Beijing-hangzhou grand canal.

世界上线路最长的运河：京杭大运河。 。

youdao

The Leeds and Liverpool Canal, Britain's longest man-made waterway, was constructed between 1770 and 1816 and carried coal, limestone, wool, cotton, grain and other farm produce.

英国最长的人造水道，利兹-利物浦运河，构建于1770年和1816年之间，曾为运输煤炭，石灰石，羊毛，棉花，谷物和其他农产品的干道。

youdao

The Jinghang canal is the longest and oldest artificial river in the world.

京杭运河是世界历史上最悠久、最长的人工河流。

youdao

In its 40 years of life, it has turned the Rideau Canal into the world's longest skating rink, planned urban bicycle paths and ski trails in Gatineau Park, and cleared LeBreton Flats, once a timber town and the camping place of lumberjacks and fur-trading voyageurs.

ECONOMIST: Canada