例如苯乙酮和氘苯乙酮气味分子具有相同的分子结构，其中一个是用称为重氢的氘原子构成。
Odorants such as acetophenone and deuterated acetophenone, for example, have the same molecular structure; one is just built from a slightly heavier hydrogen atom, known as deuterium.
最流行的聚变做法是将两个氘原子结合在一起——氘是带有一个额外的中子的重氢。
Most current fusion efforts look to combine two atoms of deuterium, a heavier version of hydrogen with an extra neutron.
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