And so this is the H-F bond in HF.
所以这是氟化氢中的氢氟共价键。
So today and Monday we're going to talk about two very big ideas and these ideas are associated with Sigmund Freud and B. F. Skinner and are psychoanalysis and behaviorism.
所以在今天和星期一,我们将学习两大心理理论,其代表人物分别是,西格蒙特·弗洛伊德和,伯尔赫斯·弗雷德里克·斯金纳,这两个理论便是精神分析理论,和行为主义理论。
You got a plus f and a minus f, so you got to do what you got to do.
这里有一个正 f 和一个负 f,所以你知道该怎么办
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