元となった辞書の項目
背泳
noun
backstroke (a swimming stroke swum on one's back)
意味（1）
backstroke (a swimming stroke swum on one's back)
backstroke (a swimming stroke swum on one's back)
backstroke (a swimming stroke swum on one's back)
DiQt（ディクト）
無料
★★★★★★★★★★
