3 sentences

1. 办理图书证需要交一百元押金。

   bàn​lǐ tú​shū​zhèng xū​yào jiāo yī​bǎi yuán yā​jīn.

   A deposit of one hundred yuan is required to get a library card.

   Source: Dong Chinese Dictionary

2. 他在缴纳了五万元押金后被准予保释。

   tā zài jiǎo​nà le wǔ​wàn yuán yā​jīn hòu bèi zhǔn​yǔ bǎo​shì.

   He was granted bail after paying a 50,000 yuan deposit.

   Source: Dong Chinese Dictionary

3. 租用这辆公共自行车时，你需要先在APP上支付押金。

   zū​yòng zhè liàng gōng​gòng zì​xíng​chē shí, nǐ xū​yào xiān zàiAPP shàng zhī​fù yā​jīn.

   When renting this shared bike, you need to pay a deposit on the app first.

   Source: Dong Chinese Dictionary