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Pavlov, when he started this research, had no interest at all in learning.
在研究的最初，巴甫洛夫，对学习行为毫无兴趣。
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$firstVoiceSent
- 来自原声例句
Pavlov, when he started this research, had no interest at all in learning.
在研究的最初，巴甫洛夫，对学习行为毫无兴趣。
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