Most materials have some elasticity

大多数材料都有一定的弹性
and over a certain range of stresses

在一定的应力范围内
they will deform elastically.

它们会发生弹性形变
Steel deforms elastically, you don't think about it doing that.

你不会想到钢铁也可以发生弹性形变
You've got to apply really high stresses

你可以施加非常高强度的应力
in order for it to deform but it does deform elastically.

使其发生形变但它的确会发生弹性形变
Wood does under some conditions, bones do;

在某些条件下木头也可以骨头也可以
all materials do under at least

所有的材料在一定的应力范围内
some range of stress conditions.

都可以发生弹性形变
Some are going to be what's called more compliant,

一些材料在发生形变时会显得更柔顺些
that is they're-- at a given stress,

也就是说在给定的应力
at a given force application

在给定的外力下