keos

例句：

1. 1. The ancient city of Keos is a UNESCO World Heritage Site.
   古老的城市基奥斯是一个联合国教科文组织的世界遗产地。
2. 2. Keos was the first person to discover the secret of time travel.
   基奥斯是第一个发现时间旅行秘密的人。
3. 3. Keos was known for his bravery and dedication to his work.
   基奥斯以其勇敢和对工作的奉献而闻名。