graded reader

劍橋詞典

one of a series of books of increasing levels of difficulty , used for teaching people to read , or to help them learn a foreign language by reading
分級(jí)系列讀物（用於閲讀教學(xué)，或作爲(wèi)學(xué)習(xí)外語者自己閲讀之用） 返回 graded reader