雅思口语素材：好句推荐-宝石与尘土　　If a jewel falls into the mire, it remains as precious as before; and though dust should ascend to heaven, its former worthlessness will not be altered.
　　宝石即使落在泥潭里，仍是一样可贵;尘土纵然扬到天上，还是没有价值。