An element is a simple substance that cannot be broken up into anything simpler.
元素是一种单质，它不可能再分成任何更单纯的物质。
For your health, give this simple substance the importance it deserves.
为了你的健康，给予这个简单物质足够的重视吧。
The turning-up of Fullerene and its Compounds, the third kind of allotrope of carbon in simple substance, has been taken a great interest in in chemical circles.
单质碳第三种同素异形体——富勒烯及其化合物的出现，已引起化学界的极大关注。
The results indicate that the content of carbon is about 90%, the degree of graphitization is 66% and the carbon of simple substance phase at the surface is 54%.
结果表明纳米石墨中碳含量为90%左右，石墨化度为66%，表面碳原子以碳单质状态存在的占54%。
It generates simple substance arsenic by reduction reaction in the colloid system with the existence of protection agent that plays a role of bi-template, dispersing and stabilizing simple substance.
其制备方法是在保护剂存在的胶体体系中，将砷化合物加还原剂还原形成单质砷。
Drinking water throughout the day is an important habit to pick up. For your health, give this simple substance the importance it deserves.
全天候饮水补水是个必须养成的重要习惯。为了你的健康，给予这个简单物质足够的重视吧。
Drinking water throughout the day is an important habit to pick up. For your health, give this simple substance the importance it deserves.
全天候饮水补水是个必须养成的重要习惯。为了你的健康，给予这个简单物质足够的重视吧。
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