4 sentences

1. 我知道你和他们联手了。

   wǒ zhī​dào nǐ hé tā​men lián​shǒu le.

   I know that you teamed up with them.

   Source: OpenSubtitles

2. 我们联手打造一个新世界吧！

   wǒ​men lián​shǒu dǎ​zào yī gè xīn shì​jiè ba!

   Let's build a new world together!

   Source: OpenSubtitles

3. 这两家公司决定联手开发下一代智能手机。

   zhè liǎng jiā gōng​sī jué​dìng lián​shǒu kāi​fā xià yī dài zhì​néng shǒu​jī.

   These two companies decided to join forces to develop the next generation of smartphones.

   Source: Dong Chinese Dictionary

4. 两家公司决定联手开发一种更环保的电池。

   liǎng jiā gōng​sī jué​dìng lián​shǒu kāi​fā yī zhǒng gèng huán​bǎo de diàn​chí.

   The two companies decided to join forces to develop a more eco-friendly battery.

   Source: Dong Chinese Dictionary