I traced the course of the river on the map spread out on my briefcase.

我在自己公文包上铺展开的地图中勾画出了这条河的流向。

《柯林斯英汉双解大词典》

The course of this river used to be quite irregular.

这条河的流向原来很不规则。

youdao

The path follows the course of the river.

小路沿河道延伸。

《牛津词典》

After the passage is over, Milton addresses Alpheus, a river god -the god who was noted for plunging the course of his river underground in order to chase the nymph Arethuse who had been turned into a fountain.

这段结束后，弥尔顿引用了河神阿尔甫斯,那位因私底下掀起河流的波浪而闻名的神,以此来与被变成海底之泉的女神阿托瑞萨相互融合。

耶鲁公开课 - 弥尔顿课程节选

It follows the course of the river, then banks sharply and climbs to circle above.

NPR: Ronan Bennett: From Prisoner to Writer

The remains of the abutment that supported the Roman bridge stand a hundred yards from the present course of the river.

BBC: Walking Hadrian��s Wall

The torrent headed south, following the course of the Indus river, wrecking lives and infrastructure in the heart of Pakistan, Punjab province, and, by-mid week, in Sindh.

ECONOMIST: Blighted Pakistan