Shell Dune 七巧板
七巧板Share this Jigsaw Puzzle
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解決時期為這個難題相片Conche shell on sand dune, Magdelena island, Mexico Conches have spirally constructed shells. Depending on species (or aberrant growth patterns), shell growth can be sinistral (left-handed) or dextral (right-handed). Sea. Share this Jigsaw Puzzle | ||
