There was one exception: a line of beds that used so-called memory foam instead of a standard mattress and box spring.
只有一个例外，那就是一系列使用所谓记忆泡沫材料的床，而一般的床用的都是弹簧床垫或床垫架。
To explain elastography, Ophir likens the body to a box-spring mattress, but "a crazy mattress made out of millions of small springs and each one is a little different."
为了解释弹性成像，Ophir把机体比作一张弹簧垫，但“一张由数百万个小弹簧组成的夸张垫子，并且每个弹簧都略有差别。
To explain elastography, Ophir likens the body to a box-spring mattress, but "a crazy mattress made out of millions of small springs and each one is a little different."
为了解释弹性成像，Ophir把机体比作一张弹簧垫，但“一张由数百万个小弹簧组成的夸张垫子，并且每个弹簧都略有差别。
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