2 sentences

1. 德黑兰是伊朗的首都。

   Dé​hēi​lán shì Yī​lǎng de shǒu​dū.

   Tehran is the capital of Iran.

   Source: Tatoeba

2. 他下周要去德黑兰参加一个国际会议。

   tā xià zhōu yào qù Dé​hēi​lán cān​jiā yī gè guó​jì huì​yì.

   He is going to Tehran next week to attend an international conference.

   Source: Dong Chinese Dictionary