出典:Wiktionary
beat one's swords into ploughshares (三人称単数 現在形 beats one's swords into ploughshares, 現在分詞 beating one's swords into ploughshares, 過去形 beat one's swords into ploughshares, 過去分詞 beaten one's swords into ploughshares または beat one's swords into ploughshares)