A compound is a substance made up of two or more elements.
化合物是由两种或两种以上元素构成的物质。
Objects form the substance of the world. Therefore they cannot be compound.
对象构成世界的实体。因而它们不可能是复合物。
A compound is a substance that can be split into two or more elements.
一种化合物是一种可以拆分为两个或多个元素的物质。
Is the substance a simple one, or a chemical compound?
物质是单质还是化合物？
Is the substance a simple one, or a chemical compound?
物质是单质还是化合物？
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