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He is very interested in physical optics.
他对物理光学很感兴趣。
youdao
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This part of the subject is called physical optics.
这部分内容叫做物理光学。
youdao
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This part of the subject is called physical optics .
这部分内容叫做物理光学。
youdao
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This part of the subject is called physical optics .
这部分内容叫做物理光学。
youdao