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来源:雅诚德英语网
How come people have to turn off their cell phones and all our electronic devices when an airplane is about to take off?
当飞机要起飞时,人们为什么要关掉他们的手机和所有的电子设备呢?
How come people have to turn off their cell phones and all our electronic devices when an airplane is about to take off?
当飞机要起飞时,人们为什么要关掉他们的手机和所有的电子设备呢?