Ref.
(law) Abbreviation of refining. / (law) Abbreviation of referee. (title)
One who makes tunnels. / A device for making tunnels.
(US, politics, obsolete) Former name of First Lady (of the United States). / Used other than figuratively or idiomatically: see lady, presidentress.
Third-person singular simple present indicative form of dust off
その法令により、原油の精製は販売前に定められた排出基準を満たさなければなりません。
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DiQt
Free
★★★★★★★★★★