这条支流很清澈。
zhè tiáo zhīliú hěn qīngchè 。
This tributary is very clear.
支流的水源来自山上。
zhīliú de shuǐyuán láizì shānshàng 。
The water source of the tributary comes from the mountains.
许多鱼在支流中游来游去。
xǔduō yú zài zhīliú zhōng yóuláiyóuqù 。
Many fish swim back and forth in the tributary.