主流

zhè shì jiāng hé de zhǔ liú hé zhī liú

这是江河的主流和支流。

These are mainstream and tributaries of a river.

tā de zhǔ liú cháng dù gōng lǐ

它的主流长度253公里。

Its mainstream length is 253 kilometers.

zhè tiáo hé de zhǔ liú liú jīng xī ān

这条河的主流流经西安。

The main stream of this river flows through Xi'an.

wǒ men bì xū fēn qīng zhǔ liú hé zhī liú běn zhì hé xiàn xiàng

我们必须分清主流和支流，本质和现象。

It is essential to distinguish the main aspect from the minor, and the essence from mere appearance.

tā de jī jìn guān diǎn shǐ tā tuō lí le ào dà lì yà zhèng zhì de zhǔ liú

他的激进观点使他脱离了澳大利亚政治的主流。

His radical views place him outside the mainstream of Austrilian politics.

fēn xī xíng shì jiù yào kàn qīng zhǔ liú hé zhī liú

分析形势，就要看清主流和支流。

In analysing a situation, it's essential to distinguish the main aspect from the minor ones.