It was once thought that lead could be transmuted into gold.

有人曾经认为铅可以变成黄金。

《牛津词典》

Ancient alchemists believed that, under the correct astrological conditions, lead could be "perfected" into gold.

古时候的炼金术士相信在正确的占星术情况下，铅会“完美地”转变为黄金。

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After experimenting for eight days, he discovered that firing powdered graphite with clay would work, and the hardness of the pencil lead could be varied by varying the ratio of graphite to clay.

他做了八天实验，发觉把石墨粉末和黏土一起烧，就可奏效。笔芯的硬度还会依石墨和黏土的比例而改变。

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And,in the long term,they say, knowing where different genetic traits may be found on the map could lead to better plants.

VOA: special.2009.11.03

It could be those differences that they experience in their extracellular environment that lead to their choice to either self-renew or to become committed.

有可能就是由于,这种细胞外环境的不同,最终导致它们自我更新,或者成为定向的祖细胞

耶鲁公开课 - 生物医学工程探索课程节选

And in the long term,they say, knowing where different genetic traits may be found on the map could lead to better plants.

VOA: special.2009.10.20

Retired Ch Supt Bob Thorogood said he was hopeful a new "significant lead" could be gathered from the findings.

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But Redknapp also thinks that Arsenal's lead in the Premiership could be to big a points gap for United to overhaul.

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But at this point, surely we can agree that consistently being in situations of this type could lead someone to be sensitive about the issue.

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