Can you swim across the river?

你能游过河吗？

youdao

Can you swim across the lake?

你能游过这个湖吗？

youdao

Can you swim across?

你能游过去吗？

youdao

You can swim across it.

你甚至可以游过去

耶鲁公开课 - 欧洲文明课程节选

Even the noise you make when you sleep, can't swim across the river so deep.

NPR: The Arcade Fire, Dark and Energetic

There's only one highway that connects Costa Rica and Nicaragua (I walked across it, shown above), but you can totally swim from one country to the other if you aren't afraid of circumventing authority.

ENGADGET: Google Maps causes border dispute between Nicaragua and (army-less) Costa Rica