Some things used in production (such as fuel)would scarcely in common language be called by either name,popular phraseology being shaped out by a different class of necessities from those of scientific exposition.
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- 生产中使用的某些物品(例如燃料)在日常用语中也许既不称为工具,也不称为原料。由于不同性质的需要,通俗用语和科学术语是不一样的。