水面上有一层薄薄的油膜。

There was a thin ___film of oil on the surface of the water.

做完饭后，灶台上留下了一层黏腻的油污。

After cooking, the hob was left with a sticky ___film of grease.

在寒冷的房间里，我的眼镜上凝结了一层水雾。

In the cold room, a ___film of condensation formed on my glasses.