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・It is a hard grind to learn [learning] a foreign language. 外国語の勉強はつらい.🔗🔉

・It is a hard grind to learn [learning] a foreign language. 外国語の勉強はつらい.

研究社新英和大辞典 ページ 193791 での・It is a hard grind to learn [learning] a foreign language. 外国語の勉強はつらい.単語。