3 sentences for 验证 (yàn​zhèng — verify)

1. 请在对话框输入验证码。

   qǐng zài duì​huà​kuàng shū​rù yàn​zhèng mǎ.

   Please enter the verification code in the dialog box.

   Source: Dong Chinese Dictionary

2. 请输入验证码以验证您的身份。

   qǐng shū​rù yàn​zhèng​mǎ yǐ yàn​zhèng nín de shēn​fèn.

   Please enter the verification code to verify your identity.

   Source: Dong Chinese Dictionary

3. 我们需要验证这份数据的有效性。

   wǒ​men xū​yào yàn​zhèng zhè fèn shù​jù de yǒu​xiào​xìng.

   We need to verify the validity of this data.

   Source: Dong Chinese Dictionary