Câu ví dụ #1
1. Locked inside white, flower-like quartz structures known to harbor fossils, they were found along what were once warm-water vents on the ocean floor, most often in deep waters.
Xem thêm »1. Locked inside white, flower-like quartz structures known to harbor fossils, they were found along what were once warm-water vents on the ocean floor, most often in deep waters.
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