1·Some people collect baseball cards, teapots, or seashells.
有些人收集棒球卡、茶壶或贝壳。
2·At first I could not see any beautiful seashells.
刚开始的时候，我并未看到任何漂亮的贝壳。
3·This is a fun project for kids who have visited the beach recently and gathered seashells.
对于最近去海滩玩过并收集了贝壳的孩子来说，这是件有趣的事。
4·Beach in a jar - This is a fun project for kids who have visited the beach recently and gathered seashells.
瓶子中的海滩-对于最近去海滩玩过并收集了贝壳的孩子来说，这是件有趣的事。
5·Meanwhile, calcium ions in the cement also absorb moisture and carbon dioxide, forming calcium carbonate -- the material found in seashells.
同时，水泥中的钙离子也会吸收水分和二氧化碳，形成碳酸钙——碳酸钙是贝壳的主要成分。