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P2PU’s mission isn’t to develop a model and stick with it.
P2PU的目的不是说要开发一种学习模式，然后持之以恒的去坚持这种模式。
youdao
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The problem was that my carrot-stick pricing model was off.
问题就在于我这种恩威并施的定价模式并没有用。
youdao
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The problem was that my carrot-stick pricing model was off.
问题就在于我这种恩威并施的定价模式并没有用。
youdao