For the finale, he creates a rainbow by shining a bright light into a glass sphere containing a single drop of water.

最后，他用亮光照射一个玻璃球，里面只有一滴水珠。彩虹出现了。

youdao

There was a wine expert and someone whose job it was to drop by every three minutes and refill your water glass.

配了位葡萄酒技师，还有几个人的全部工作是每隔三分钟倒掉你杯里的清水再蓄上。

youdao

Real men, international business trouble-shooters and the like, may still gulp Scotch from heavy cut-glass tumblers with nothing more than a drop of water to blunt the harshness of it.

男士、国际商务调解员等等可能还会用大而重的刻花玻璃酒杯大口大口地喝苏格兰威士忌，喝时只是在酒里稍加一点水以减轻其烈性。

youdao

My hands shook as I put a drop of water on a piece of glass.

VOA: special.2009.07.25

Combine whiskey, sugar, and water in a warmed coffee glass nad twist the lemon peel over and drop it in.

FORBES: WARM DRINKS FOR AUTUMN NIGHTS