6 sentences

1. ‎你为什么想插手日本的事？

   ‎ nǐ wèi​shén​me xiǎng chā​shǒu Rì​běn de shì?

   Why did you want to get involved in Japan?

   Source: OpenSubtitles

2. 他为什么要插手？

   tā wèi​shén​me yào chā​shǒu?

   Why's he getting involved?

   Source: OpenSubtitles

3. 这是他们的家务事，外人不好插手。

   zhè shì tā​men de jiā​wù​shì, wài​rén bù hǎo chā​shǒu.

   This is their private family matter; it's not appropriate for outsiders to interfere.

   Source: Dong Chinese Dictionary

4. 这是我们两人的私事，不需要旁人插手。

   zhè shì wǒ​men liǎng rén de sī​shì, bù xū​yào páng​rén chā​shǒu.

   This is a private matter between the two of us; we don't need others to intervene.

   Source: Dong Chinese Dictionary

5. 既然这是他们两人的家务事，你就不要插手了。

   jì​rán zhè shì tā​men liǎng rén de jiā​wù​shì, nǐ jiù bù yào chā​shǒu le.

   Since this is their private domestic affair, you shouldn't interfere.

   Source: Dong Chinese Dictionary

6. 这起案件受到了外部势力的插手，处理起来非常困难。

   zhè qǐ àn​jiàn shòu​dào le wài​bù shì​li de chā​shǒu, chǔ​lǐ qi​lai fēi​cháng kùn​nan.

   The case was complicated by the interference of outside forces, making it very difficult to handle.

   Source: Dong Chinese Dictionary