sound-off switch 中文意思是什麼
sound-off switch
解釋
聲斷路開關-
The real reason to switch them off is because they interfere with mobile networks on the ground, but somehow that doesn ' t sound quite so good
需要關掉手機的真實原因是它們會影響地面上的移動通訊網路,只是這個理由不是那麼動聽罷了。
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