1. But milk is a fluid.Don´t you think I´m supposed to drink a lot of fluids when I have a cold?
    但是牛奶是一种流质, 你不认为我感冒时应该多喝一些流质吗?

2. Air is a fluid but not a liquid, while water is both a fluid and a liquid.
    空气是流体不是液体, 水是流体也是液体.