You need a material with plenty of stretch in it.
你需要一种弹性很大的布料。
Every time light moves into a material with a new speed, it bends and scatters.
每次光线以新的速度穿越一个物体时，它会弯曲，并发生散射。
If a material contains many delocalized bonds, it is likely to be soft.
如果材料包含许多离域键，则它可能会很软。
A material witness failed to appear in court.
一名重要的证人没有出庭。
A careful evaluation of the properties of a. material must be made prior to any calculations.
对材料的特性必须事先作出仔细的评估。
A careful evaluation of the properties of a. material must be made prior to any calculations.
对材料的特性必须事先作出仔细的评估。
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