elementary substance
A pure chemical substance consisting of a single element (e.g. hydrogen gas).
(colloquial) A person who is overly reliant on the use of their car, resisting any suggestion to use other means of transport.
One of ninety-eight equal parts of a whole.
A measure by the ell. / (historical) A sworn officer in England, whose duty was to inspect woollen cloth and fix a seal upon it.
研究室は、その試料が単一元素からなる純物質で、構成は水素分子のみであることを確認した。
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