以下为句子列表：
英文: Single crystals of high perfection are an absolute necessity for the fabrication of integrated circuits.
中文: 对制造集成电路来说，高纯度的单晶是绝对必要的。
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英文: Single crystals of zircon began to add new information about the early earth in the 1980s, when a few rare grains from the Jack Hills and Mount Narryer regions of Western Australia became the most ancient terrestrial material known at that time—the oldest
中文: 1980年代，在澳洲西部的杰克丘与纳瑞尔山区发现了几颗稀有的锆石结晶，定年结果可追溯到43亿年前，因此成为地球上已知最古老的物质。
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