声音简介
Hi everyone, please look around you, all things have weight. Weight is how heavy something is. We weigh things on scales. Kitchen scales weigh food. Bathroom scales weigh people. Many things are light. They are easy to carry. We weigh them in grams and ounces. Are big things heavy? Are small things lught? Not always. For example, a big beach ball is light. But a bowling ball is different. It's smaller but heavy.
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