德黑兰（Tehran）是伊朗的首都和最大城市，该城市的英文名称来自于伊朗语的原名，意为"热带的地方"。例句：

I'm planning to visit Tehran next year. 我打算明年去德黑兰旅游。

Tehran is known for its historical and cultural attractions. 德黑兰因其历史文化景点而闻名。