Making the trumpets is simple: plastic is melted into a mold and then it sets.A small group of women take off the sharp edges to finish off the process.

制造这种喇叭非常简单：塑料被融化制成模型然后安装，一群妇女磨平锋利的边缘，工序完成。

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Making the trumpets is simple: plastic is melted into a mold and then it sets. A small group of women take off the sharp edges to finish off the process.

制造这种喇叭非常简单：塑料被融化制成模型然后安装，一群妇女磨平锋利的边缘，工序完成。

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So that the plastic can be melted down and re-molded without any discoloration!

使塑料熔化后可重新塑造没有任何变色！

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The classroom was completely destroyed and an eco-greenhouse, made using plastic bottles, melted.

BBC: Hazlewood School fire aftermath

Cables fell and trapped Mr Shears and Mr Bannon after plastic trunking they were cased in melted - and the pair had no cutting equipment to free themselves.

BBC: Jim Shears (left) and Alan Bannon

IBM's design involved feeding small plastic wafers into a heated pump that melted them and pushed the goo through an extruder.

FORBES: Almost Out of the Woods