Terms: saturated fat - oils that make a hardsoap. 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。
2
Soap does not lather well in hard water.
肥皂在硬水中起不了多少泡沫。
《牛津词典》
3
Although many developer tools make it relatively easy to work with SOAP and WSDL, I consider them heavyweight technology, because they're hard to work with if you don't use those tools.