以下为句子列表：
英文: Once formed, zircon crystals are so durable that they can persist even if their parent rock is exposed at the surface and destroyed by weathering and erosion.
中文: 但是，这些锆石所蕴含的讯息似乎隐晦不清，部份原因是地质学家无法确定它们的母岩。
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英文: The third-deepest soil zone in ABC soil, unaltered by weathering and made up of the parent rock from which the two uppermost layers derive as well as other mineral materials.
中文: 剖面层ABC土壤剖面层中深度排第三的剖面层，不受风化的影响，由上两层及其他矿物组成的母岩所构成
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