The second sort of learning is known as classical conditioning.

学习的第二种形式，被称为经典条件作用。

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Second, the poor, of a sort: second-class, second-hand, second-rate level.

第二的，较差的：二等，二手货，二流水平。

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Second, the poor, of a sort: second-class, second-hand, second-rate level.

第二的，较差的：二等，二手货，二流水平。

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