語ご彙い制せい限げん本ぼん

noun

graded reader; limited-vocabulary reader

A book written with a controlled vocabulary, often for language learners. The term is technical and used in educational or linguistic contexts.

• 日本にほん語ご学がく習しゅう者しゃ向むけの語ご彙い制せい限げん本ぼんが増ふえている。

  Graded readers for Japanese learners are increasing.

• この語ご彙い制せい限げん本ぼんは初しょ級きゅうレベルの語ご彙いだけで書かかれている。

  This limited-vocabulary reader is written using only beginner-level vocabulary.