Any simple alcohol is composed of a number of carbon and hydrogen atoms (like a hydrocarbon such as petrol) together with a single oxygen atom.
任何一种简单醇类都是有大量的碳分子和氢分子(如同碳氢化合物，譬如汽油)以及单个氧原子组成。
As water is composed of Oxygen and Hydrogen, given the electrical energy it can be split into these two elements.
水是由氧和氢组成，所以在获得电能后，水就可以分解为氧和氢。
Water is composed of the elements hydrogen and oxygen.
水是由氢元素和氧元素组成的。
Mantle fluid is a mixture of gases and volatiles at equilibrium with its host mantle ambience and it is mainly composed of carbon, hydrogen, oxygen, nitrogen and sulphur (CHONS).
地幔流体是与地幔环境处于平衡的气体和挥发分。其主要化学组分为碳、氢、氧、氮、硫（CHONS）。
Water is composed of the elements hydrogen and oxygen.
水由氧元素和氢元素组成。
Water is composed of the elements hydrogen and oxygen.
水由氧元素和氢元素组成。
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