precursors
(botany) Of or pertaining to palms; of the nature of, or resembling, palms.
plural of precursor
The process or act of selecting. / Something selected. / A variety of items taken from a larger collection. / A musical piece. / (databases) A set of data obtained from a database using a query.
(transitive) To fritter away.
化学者たちは合成を始める前に出発物質を入念に調べた。
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