4 sentences

1. 这篇深度报道被多家主流媒体转发。

   zhè piān shēn​dù bào​dào bèi duō jiā zhǔ​liú méi​tǐ zhuǎn​fā.

   This in-depth report was reposted by several mainstream media outlets.

   Source: Dong Chinese Dictionary

2. 这种艺术风格已经进入了社会的主流。

   zhè zhǒng yì​shù fēng​gé yǐ​jīng jìn​rù le shè​huì de zhǔ​liú.

   This artistic style has entered the social mainstream.

   Source: Dong Chinese Dictionary

3. 长江的主流最终汇入了大海。

   Cháng Jiāng de zhǔ​liú zuì​zhōng huì​rù le dà​hǎi.

   The main stream of the Yangtze River eventually flows into the sea.

   Source: Dong Chinese Dictionary

4. 虽然存在分歧，但友好合作仍是两国关系的主流。

   suī​rán cún​zài fēn​qí, dàn yǒu​hǎo hé​zuò réng shì liǎng guó guān​xi de zhǔ​liú.

   Despite differences, friendly cooperation remains the mainstream of the relationship between the two countries.

   Source: Dong Chinese Dictionary