-180208-Transport of the future-BBC 6分钟英语- BBC 6 Minute Engli

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• htcb1122:commonplace not unusual; often seen automation using a machine to do something instead of a human prototype the first version of something which can be tested before it is produced in large quantities. far-fetched so unbelievable it's unlikely to happen. maglev magnetic elevation; a method for moving something vacuum a space that has had all the air and any other gases removed from it
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