Liquids made up of polar molecules are really good at dissolving solids that are composed of polar or ionic compounds.

由极性分子组成的液体非常擅长溶解由极性或离子化合物组成的固体。

To get around the first problem, scientists studying liquid ventilation work with liquids made up of perfluorocarbons, or PFCs, instead of water.

为了解决第一个问题，研究液体通风的科学家们使用由全氟化碳或 PFC 组成的液体代替水。