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。

Unfortunately, as a standard mattress wears, the springs soften and so do not support your spine.

《柯林斯英汉双解大词典》

如果你看的是内置弹簧床垫，请问一下这张床是否有类似边缘支撑物的东西。

If you are looking at an innerspring mattress, ask whether the bed has any kind of "edge support."

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研究结论可为斜支撑弹簧减振系统的设计提供理论依据。

The conclusion of research can provide academic foundation for the design of shock absorber with inclined support spring.

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You feel heavy and it reads more because the poor spring not only has to support you from falling through the floor, but also accelerate you counter to what gravity wants to do.

你感到自己变重以及读数增加,因为现在弹簧不仅要支撑你,不让你掉下来,还要抵消重力的作用让你加速

耶鲁公开课 - 基础物理课程节选