At this point, half of each word has been written, the half that can be understood.

从这一点，每个词写出了一半，可理解的一半。

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The half-wavelength loss is a key concept difficult to be understood.

半波损失是大学物理中的重点和难点问题。

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The half-wavelength loss is a key concept difficult to be understood.

半波损失是大学物理中的重点和难点问题。

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