Chalk : The common name for calcium carbonate, which is found as a natural deposit all over the world, and is composed of the remains of tiny crustaceans. Traditionally used in painting and drawing.
👇 ស្វែងរកឯកសាររៀននិងការងារគ្រប់ប្រភេទនៅទីនេះ៖
👇 ស្វែងរកពាក្យផ្សេងទៀតនៅប្រអប់នេះ៖