There's two--One technical distinction that people love to put on Intro Psych exams is that the difference between positive reinforcement and negative reinforcement.
心理学导论的考试中,会经常考到一个术语上的区别,即正强化,与负强化之间的区别。
There were precursors to this, but the SEC forces the difference between public and private securities and this is a very important distinction.
例如证交会强制界定了,公共券商与私募券商之间的差异,这是非常重要的划分
This isn't simply a distinction without a difference.
这不是一个简单的没有任何区别的特征。
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