这个机器能把蒸汽冷凝成水。

This machine ___condenses steam into water.

教授把复杂的理论浓缩成几个简单的要点。

The professor ___condenses the complex theory into a few simple points.

窗玻璃上的水珠是因为空气中的水蒸气遇冷凝结形成的。

The water droplets on the window form when moisture in the air ___condenses.