In factories, workers use it to melt metals.

在工厂里，工人们用火熔化金属。

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If a laser beam were not so intense, it would not be able to melt metals.

如果激光束不那么强烈，它就不能熔化金属。

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In factories, workers use fire to melt metals to make things of different shapes.

在工厂里，工人们用火熔化金属，以制造各种形状的物品。

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Liquid metal. Solid metals melt and become a liquid metal like mercury.

液态金属，固态金属熔化,形成一种像水银一样的液态金属。

麻省理工公开课 - 固态化学导论课程节选

As the planets congealed, gravitational forces and particle collisions created the high temperatures necessary to melt metals floating around in space, and minerals began their diversification.

ECONOMIST: Minerals