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We go back to the spring and we want to learn something about the spring.
我们回到弹簧的问题上来,我们要学习一些关于弹簧的知识
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$firstVoiceSent
- 来自原声例句
We go back to the spring and we want to learn something about the spring.
我们回到弹簧的问题上来,我们要学习一些关于弹簧的知识
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