这些物质会加入到塑料当中来增加弹性，透明度以及耐用性。

These are substances that are added to plastics to increase their flexibility, transparency and durability.

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这些物质会加入到塑料当中来增加弹性，透明度以及耐用性。

These are substances that are added to plastics to increase their flexibility, transparency and durability.

youdao