天然的英语该怎么说

"Natural" is the English word for "天然" in Chinese. If you want to describe something as natural, you can say "It is natural" or "It is a natural occurrence." For example:
The water in this river is so clear and pure because it comes from a natural spring.
The leaves on this plant are a beautiful shade of green because it is a natural color.
Note that "natural" can also be used as an adjective to describe something that is not artificial or synthetic. For example:
These cookies are made with natural ingredients like flour, sugar, and eggs.
I prefer to use natural beauty products because they are less likely to cause irritation.