比比波拨
幼苗
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试金石是一种能把任何常规金属转化成纯金的小卵石.文章解释到,卵石存在于成千上万个与其十分相似的卵石之中.但秘密就在此:真正的试金石摸起来暖和,而普通的卵石摸起来冰凉.
另外,你文章中有几处单词错误,我给你改了下.
The touchstone was a small pebble that could turn any common metal into pure gold.The wirtting explained that it was lying among thousands of other pebbles that looked exactly like it.But the secret was this:the real touchstone would feel warm,while ordinary pebbles would feel cold.
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