随着冲击速度的提高，材料具有应变率正敏感性，但到一定程度材料反而显示出应变率负敏感性。

With the increment of impact velocity, the new material appears positive strain rate sensitivity, but when the increment reaches a certain degree, the material shows negative strain rate sensitivity.

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我们都有无限的创造性，但只有在达到一定程度，即我们意识到是我们自己创造了限制自己思想的方式。

We're all limitlessly creative, but only to the extent that we realize that we create our own limits with the way we think.

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地面植被加热到一定程度会释放出气体，但其中有些气体是不能燃烧，因为它们周围没有足够的氧。

The vegetation on the ground heats up enough to release gas, but some of the gas can't combust, because it doesn't have enough oxygen around it.

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