rom.

例句：

1. 1. The city of Rome is known for its ancient ruins.
   罗马城以其古老的遗迹而闻名。
2. 2. He fell in love with a beautiful woman from Romania.
   他爱上了来自罗马尼亚的一位美女。
3. 3. Roman numerals are used to represent numbers in the Roman system.
   罗马数字用于表示罗马体系中的数字。