Tom and I spent the entire day in my canoe on the river.
我和汤姆一整天都呆在河上的小船中。

It carried Tom south. But after a while he arrived at the river's edge.
它把汤姆往南冲了一段，过了一会儿他游到了岸边。

Tom was taking a walk along the river bank while he heard a cry for help.
当汤姆听到有人大声求救的时候，他正在沿着河岸散步。

The Governor of the state agrees and Tom is released from prison, but only to be seized by the creditors and sold down the river as a slave.
州长对此表示同意。于是汤姆获释出狱，但只是为了使他归属债权人，然后被卖到大河下游去当了奴隶。