a cup of cold water

例句：

1. 1.She took a cup of cold water tohelp her sore throat.
   她喝了一杯冷水来缓解喉咙痛。
2. 2. Theold man poured a cupof cold water into his glass.
   老人往他的玻璃杯里倒了一杯冷水。
3. 3. After the long flight,she drank a cup of cold water tostay hydrated.
   长途飞行后，她喝了一杯冷水以保持水分。