Hanoi

例句：

1. 1. The Hanoi Hilton is a luxurious hotel located in the city center.
   河内希尔顿酒店是一家豪华的酒店，位于市中心。
2. 2. The Hanoi people are known for their friendly and hospitable nature.
   河内人民以友好和好客而闻名。
3. 3. The Hanoi Opera House is one of the most famous opera houses in the world.
   河内歌剧院是世界上最著名的歌剧院之一。