5 sentences for 当 (dāng — at)

1. 他当少年时便立志报国。

   tā dāng shào​nián shí biàn lì​zhì bào​guó.

   When he was a youth, he determined to serve his country.

   Source: Dong Chinese Dictionary

2. 这事就当是咱俩的小秘密。

   zhèi shì jiù dāng shì zán liǎ de xiǎo mì​mì.

   Let's keep this our little secret.

   Source: OpenSubtitles

3. 他在入职当月就拿到了奖金。

   tā zài rù​zhí dāng yuè jiù ná​dào le jiǎng​jīn.

   He received a bonus in his first month on the job.

   Source: Dong Chinese Dictionary

4. 此处地当路冲，行人车辆非常多。

   cǐ​chù dì dāng lù chōng, xíng​rén chē​liàng fēi​cháng duō.

   This place is at a major thoroughfare, with many pedestrians and vehicles.

   Source: Dong Chinese Dictionary

5. 当时针和分针在十二点重合时，就是正午了。

   dāng shí​zhēn hé fēn​zhēn zài shí'èr diǎn chóng​hé shí, jiù shì zhèng​wǔ le.

   When the hour and minute hands overlap at twelve, it is noon.

   Source: Dong Chinese Dictionary