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  • 国家地理-2008-04-08 Coastal Cleanup 净滩大行动

    Even as the first day of autumn hovers over American shores, traces of summer linger. So, every year at this time, nearly half a million people step forward to help, to volunteer in an international coastal cleanup and the results can be staggering....

  • A Thorough Cleanup大扫除

    Mother : Quiet, everybody!...Come here and sit down....OK, now, let me assign the jobs to each one of you. Daddy, you're assigned to weed the garden. John, clean all the windows. William, wash and wax...

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