mattress

/ˈmætrəs/📚 6083 91 1
A mattress is the large, flat object which is put on a bed to make it comfortable to sleep on. 床垫

noun [专属名词]床垫,褥垫;(工程)垫层,沉排,钢筋网

The mattress is best on a solid bed base.

mattress 出现在下面的课文中
Lesson 49 The end of a dream mattress 名词: 床垫
Lesson 18 Porpoises
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