There's no water in the cup.

杯子里一点水都没有。

youdao

There is so much water in the cup that I can't drink it out.

杯子里有这么多的水，以至于我喝不完。

youdao

She ordered hot tea, and the suit says the flight attendant brought her a cup of "extremely hot water" sitting in another cup which contained the tea bag and condiment packets.

CNN: Passenger sues Southwest Airlines over hot tea spill

"My technique is I dunk two hot dogs in the water cup and then eat, " she said.

CNN: Hot dog eating champs all set for July Fourth contest

Some powder to mix with water in the mess kit tin cup.

NPR: Kate Nolan, WWII Combat Nurse