carbon

Diamonds are composed of pure carbon atoms arranged in an extremely hard crystal structure.

(Chinese) 钻石是由排列成极硬晶体结构的纯碳原子组成的。

In chemistry class, we learned that carbon is the fourth most abundant element in the universe.

(Chinese) 在化学课上，我们了解到碳是宇宙中第四丰富的元素。

The factory installed new technology to significantly reduce its annual carbon output.

(Chinese) 这家工厂安装了新技术，以显著减少其年度碳排放量。

Many international companies are striving to become carbon neutral by the year 2050.

(Chinese) 许多国际公司正努力在2050年之前实现碳中和。