plastic本身是个不可数名词,但是加上s后表示各种各样的塑料材质.
例句Modern plastics can stand very high and very low temperatures.
新型塑料能承受很高和很低的温度。
If you build more plastics into cars, the car lasts longer.
如果汽车采用更多塑料元件，寿命会更长一些。
The superglue may not create a bond with some plastics
强力胶水可能无法粘住某些塑料。
Plastics has been used widely.
塑料已被广泛利用。
Most plastics do not readily conduct heat or electricity.
大多数塑料不易传热或导电。
Plastics will soften when exposed to heat.
塑料适当加热就可以软化。
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