Now the river bed is bone dry.

目前河床十分干燥。

Left that stone in the river bed.

该把那块石头留在河床上。

The river bed dried up in the hot summer.

盛夏时节，河床干涸了。

The border crossing is a dry river bed and a bridge.

边界是一条干涸的河流，河上有一座桥。

Soil removed from the river bed loosely binds the rocks.

由河床挖出的泥土勉强固定着岩石。