A whitesmith is a person who works with "white" or light-colored metals such as tin and pewter.
金属抛光匠是使用“白色”或浅色金属（例如锡和白镴）的人。
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Trapping these systems in periodic potential wells made by intersecting light beams yields optical lattices in which atoms behave as electrons in metals, albeit at a quite different scale.
Since metals, including zinc and copper, form part of many animals' diets, so mapping them in fossils could shed light on what the animals fed on 100 million years ago.