The river is inaccessible to hikers, so the only way to enjoy it is to take a river trip that requires several days of camping.

这条河无法通过远足活动访问，所以享受它的唯一方法就是去河旅行，需要几天的露营。

youdao

They took a trip down the river.

他们沿河往下游旅行。

《牛津词典》

It's interesting to take a trip on the river.

在河上旅行很有趣。

youdao

A few weeks later, before the talks could be completed, Upshur joined the president and congressional leaders for a trip down the Potomac River.

VOA: special.2009.02.05

Many visitors take a trip across the valley on the Snake River.

VOA: special.2009.02.16

The country house was in a town near the Piave River, a trip the doctor could make in three days, by crossing the lagoon by gondola to Portegrandi and then continuing in a carriage.

NPR: Book Traces Family Suffering from Deadly Insomnia

PAUL, Minn. (AP) A fourth-grade field trip to a Mississippi River park popular with fossil hunters turned deadly Wednesday when gravel saturated by persistent rain gave way, killing one child and injuring two others.

NPR: 1 Child Dead, 1 Missing In Minn. Park Landslide

You're stabbing into the wilderness for a five-day fly-fishing trip, floating a river for trophy brown trout.

FORBES