比较好的洋人答疑 My wife and I are walking along the banks of the river. If it is a small river (1 to 10 meters wide) it is quite possible that they walked on both banks (both sides of the river) at some time during their walk, using a foot bridge to cross. The sentence doesn't tell us. It says their walk was not restricted to one side of the river, but not whether they actually crossed.