spring mattress是什么意思
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发布时间：2023-04-23 15:38
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时间：2023-04-27 16:06
mattress /ˈmætrɪs/ CET6+ TEM4 ( mattresses )
1.
N-COUNT A mattress is the large, flat object which is put on a bed to make it comfortable to sleep on. 床垫
N-COUNT A spring is a spiral of wire which returns to its original shape after it is pressed or pulled. 弹簧
例：
Unfortunately, as a standard mattress wears, the springs soften and so do not support your spine.
不幸的是，当一张标准床垫用旧后，其弹簧变软，因而不能支撑你的背脊。
