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All right. First thing we need to do is have some sort of a theory.
好了，我们要做的第一件事就是,要有一些理论。
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$firstVoiceSent
- 来自原声例句
All right. First thing we need to do is have some sort of a theory.
好了，我们要做的第一件事就是,要有一些理论。
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