Spellers
(inorganic chemistry) Any anion derived from beryllate by replacing an oxygen atom with two of fluorine, but especially the anion BF₄²⁻; any salt containing such an anion
plural of Speller
simple past tense and past participle of commote
A town in Blaenau Gwent county borough, Wales (OS grid ref SO1409).
綴りを競う参加者たちは夜遅くまで練習し、互いに難しい単語やその定義を出し合っていた。
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