The change in material and color is apparent.

材料和颜色的变化十分明显。

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These are hierarchally weaker than the thick dashed lines and could represent a change in material among other things.

这些虚线整体上都比之前粗虚线要弱一些，它们可以帮助表现不同物体之间材质的区分。

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In the process of formation, the material must have received an environmental signal that reflects a change in climate and that can be deciphered by modern physical or chemical means.

在形成的过程中，材料必须接收到环境信号，反映气候变化，并能被现代物理或化学手段破译。

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In other words, how much does the temperature of the whole thing change when you put an ordinary amount of material in there and run a reaction, right. Well, what do you do?

当你放入通常数量的材料,并进行反应时,整个装置的温度,改变有多少，你要做什么？

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"But Apple will need to ensure a change in material does not compromise the performance of the device, " he added, noting the infamous " antenna-gate" issue with the iPhone 4.

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"They were plainly intended, particularly in the case of the economic statement, to bring about a material change in the way planning applications were determined and to influence the outcome, " the judge said.

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"This is not a material change in guidance, " says Morris Mark of Mark Asset Management, which also holds AOL Time Warner shares.

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