3 sentences

1. 他想知道是不是我强行扣留你的。

   tā xiǎng zhī​dào shì bù shì wǒ qiáng​xíng kòu​liú nǐ de.

   He wants to know if I'm holding you against your will.

   Source: OpenSubtitles

2. 由于证件存在疑点，机场安检人员暂时扣留了那名旅客。

   yóu​yú zhèng​jiàn cún​zài yí​diǎn, jī​chǎng ān​jiǎn rén​yuán zàn​shí kòu​liú le nà míng lǚ​kè.

   Airport security personnel temporarily detained the traveler because there were suspicious details regarding their documents.

   Source: Dong Chinese Dictionary

3. 银行因怀疑该笔资金来源不明，暂时扣留了这笔存款。

   yín​háng yīn huái​yí gāi bǐ zī​jīn lái​yuán bù míng, zàn​shí kòu​liú le zhè bǐ cún​kuǎn.

   The bank temporarily withheld the deposit because they suspected the source of the funds was unclear.

   Source: Dong Chinese Dictionary