碳的

例句：

1. 1.Carbon is a common element in the periodic table.
   碳是周期表中常见的元素。
2. 2. The graphite is used to make pencils and pens.
   石墨被用来制作铅笔和钢笔。
3. 3. The carbon dioxide gas is released into the atmosphere from burning fossil fuels.
   燃烧化石燃料时，二氧化碳气体会释放到大气中。