求翻译：Word is one of the three basic language units(sound, word , grammar). It is essential to communication. One of the famous linguists Wilkins once said that, “Without grammar very little can be conveyed, without vocabulary nothing can be conveyed.”(Wilkins, ENGLISH STUDY, Foreign Language Study Institute, 1987) Little children learn to speak in isolated words and then in chains of nouns and verbs. A child who says “Mum bye-bye bike” is easily understood by English-speaking adult. Students who are immersed into a new linguistic settling tend to pick up vocabulary first, and then gradually develop a more accurate, structural framework in which to use these words. And they must continually be learning words as they learn structures and as they practice the sound system. Therefore, vocabulary teaching is an indispensable part of English lessons in middle school, and an important task for the teachers. Whether a middle school English teacher can follow scientific methods to teach vocabulary or not directly bring good or bad influence toward the students. If his methods are suitable for the students and beneficial for them in the long run, he could arouse their interest on English and help them to develop a solid foundation of language acquisition ability; whereas if he fails to do so, it might result in the students’ diffidence toward themselves and might cause them to disgust English.是什么意思？

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