質の悪い

Meanings

1. Expression, Prenominal

   poor-quality; low-quality; shoddy; low-grade

• 外国語がいこくごの学習者がくしゅうしゃが間違まちがいを恐おそれずに学習がくしゅう中なかの言語げんごを使つかってみるのは素晴すばらしいことですが、十分じゅうぶんな実力じつりょくのない人ひとが間違まちがいを恐おそれずに質しつの悪わるい語学ごがく教材きょうざいを作つくるのはいかがなものかと思おもいます。

  Of course it's a good thing when someone learning a foreign language tries to use it without fear of making mistakes, but I don't think much of people without sufficient ability producing language learning material of poor quality.