one on the city

• 一杯水

one on the city的用法和样例：

例句

1. I'll have a brandy, with water on the side.
   来杯白兰地，外加一杯水。
2. He put one worm in a glass of water and another worm in a glass of whiskey.
   他把一只虫子放在一杯水里，另一只虫子放在一杯威士忌酒里。