This is the 4867th most frequent Chinese word.
被套
Duvet cover.
Here, '被套' is used to refer to a physical item, specifically a protective cover for a duvet or blanket.
我买了一套新的被套。
I bought a new duvet cover.
In this sentence, '被套' is again used as an object being described by its qualities, such as softness and comfort.
这个被套非常柔软舒服。
This duvet cover is very soft and comfortable.
The usage of '被套' here denotes the action involving the object, specifically changing and washing the duvet cover.