onliest

例句：

1. 1. This is the only place I've ever been to in Europe.
   这是我在欧洲唯一去过的地方。
2. 2. The only way to solve this problem is to try different approaches.
   解决这个问题的唯一方法是尝试不同的方法。
3. 3. She was the only one who could understand his complex ideas.
   她是唯一一个能理解他复杂想法的人。