The law has no separate existence.
法律并不是孤立存在的。
The atom is the smallest particle of an element that can have a separate existence of take part in a chemical reaction.
原子是元素的最小粒子，它能单独存在或参与化学反应。
The atom is the smallest particle of an element that can have a separate existence of take part in a chemical reaction.
原子是元素的最小粒子，它能单独存在或参与化学反应。
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