求翻译：→Students didn’t learn 26 letters before studying in middle schools, so the teaching task is very heavy: first, students need to remember a large number of new words, phrases, sentences, and 90% of students will know few or poorly understood. So, it is necessary for students to re-examine the memory of words and get guidance from teachers to help them build confidence, master the methods and overcome the difficulty in learning words.是什么意思？

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