北京

例句：

1. 1. Beijing is the capital of China.
   北京是中国的首都。
2. 2. The Great Wall is one of the most famous landmarks in Beijing.
   长城是北京最著名的地标之一。
3. 3. I've always wanted to visit Beijing, the city that never sleeps.
   我一直想去北京，那个永不眠的城市。