chalk quarry. large white stones. deposits of Cretaceous rocks. Production of chalk. Open pit chalk rocks. Industrial production of chalk and clay mining. Open pit mine digging for minerals
ID: 1177208404
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- 大图:2432 × 3648 像素·20.59 cm × 30.89 cm·300dpi·JPG
- 中图:667 × 1000 像素·23.53 cm × 35.28 cm·72dpi·JPG
- 小图:334 × 500 像素·11.78 cm × 17.64 cm·72dpi·JPG