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滤波器
🗣️ 情景例句
Dr. Tyler's office. Good morning.
早上好，泰勒医务所。
Yes, we have done a little. But we have just started and have nothing to show you.
有，我们做了一些，但是因为我们才刚起步，并没有任何资料可以提供给你们。
No, not that one. The red one.
不，不是那本。是那本红皮的。