The resin is a sticky substance — like pine resin — and it forms a hard coating on the painting after everything dries.

树脂是一种粘性物质——比如说松树树脂——在所有东西变干后，它会在画上形成一层坚硬的涂层。

And fun fact: this is where ear wax forms, coating the ear canal to moisturize it, fight off infection, and help keep debris from getting to your inner ear.

有趣的事实：这是耳垢形成的地方， 覆盖耳道以滋润它，抵抗感染，并帮助防止碎屑进入您的内耳。

This saliva contains a special ingredient called mucin, which is a protein that loves to soak up water, creating a kind of gel which forms a thin, protective coating all over your mouth parts.

这种唾液含有一种特殊的成分叫粘蛋白，它是一种喜欢吸收水的蛋白质，它产生一种凝胶，而这个凝胶会在你的口腔部分形成一层薄的保护性涂层。