Terms: saturated fat - oils that make a hard soap. Usually come in a solid form and need to be melted before using. coconut, cocoa butter, palm oil are examples.

饱和脂肪：可以制作质地较硬的皂；通常是以固体型式存在，需加热溶解。如，椰子油，可可脂，棕榈油等。

youdao

It was hard work. The wet clothes were heavy, and the soap had lye in it.

VOA: special.2010.03.28

Soap was so hard to come by, even completely nonexistent sometimes.

CNN: Recycling hotel soap to save lives

The private-sector soap companies and the government officials and health workers found it hard to understand each other at first.

ECONOMIST: Just add soap and water