音标：['heptil] ；

[建] 庚基

n. A compound radical, C7H15, regarded as the essential
radical of heptane and a related series of compounds.

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发表于:2018-12-15 / 阅读(256) / 评论(0)

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学英语单词

a group of people

All is grist that comes to his mill.

allowance for uncollectable account

alycia

analog chromatogram

Archibald's fever

areal reflection survey