past simples
Abbreviation of social.
plural of past simple
(biochemistry) A nonessential amino acid C₅H₉NO₂ found in most animal proteins, especially collagen; its cyclic structure leads to kinks in the peptide chain of proteins.
Any dinosaur of the subfamily Carcharodontosaurinae
その練習では、生徒たちはいくつかの過去形の語を挙げて、それらを文で使わなければなりませんでした。
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