江河的一段reach

• 上游

  upper reach

• 中游

  middle reach

• 下游

  lower reach

在水中行动to swim

• 仰游

  backstroke

• 向对岸游过去

  swim towards the opposite bank

• 游过河去

  swim across the river

• 游了一百米

  swim one hundred metres

• 鱼在水中游。

  Fish are swimming in water.

参见：游览[yóulǎn]

• 游山

  visit a mountain

• 周游天下

  travel the world

交游<书>to associate with

不固定的，经常移动的mobile