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mong teenagers allow the young users to hide their munication from the notice of their parents even when they are present. Part V Language Points : v. to make someone realize that their behaviour was wrong or mistaken 懲戒 , 通過責(zé)罰使( 犯錯(cuò)誤的人 ) 改正 ( 或變好 ) . These teachers, chastened by their students, have learned to be cautious. Too late to admit us, he stood, chastened, and confessed he’d been knocked out. 2. innovation: n. 1) the introduction of new ideas or methods 創(chuàng)新 , 革新 . We must encourage innovation if the pany is to petitive. 2) a new idea, method, or invention 新事物 , 新方法 . recent innovations in English teaching 3. spur: v. to make an improvement or change happen faster 刺激 , 激勵(lì) . Lower taxes would spur investment and help economic growth. The growth of tourism has spurred equivalent developments in the hotel and leisurerelated sectors. 4. ubiquitous: adj. seeming to be everywhere 普遍存在的 , 無處不在的 . Plastic containers are ubiquitous nowadays. Coffee shops are ubiquitous these days. 5. shuttle: v. to travel frequently between two places 穿梭往返 . Susan shuttles between Rotterdam and London for her job. During the week, I often shuttle easily to appointments in central London by car. 6. distinctly: adv. clearly 明確地 , 清楚地 . Speak clearly and distinctly. He distinctly remembered the day his father left. : n. a brother or sister 兄弟 ( 或姐妹 ) . Most young smokers are influenced by their friends39。 and older siblings39。 smoking habits How can siblings, raised in the same family, be so different? 8. accelerate: v. to happen or make something happen at a faster rate ( 使 ) 加快 , 促進(jìn) . Rather than stopping change, it accelerated change. From then onward the pace of change accelerated. 9. track: v. to record or study the behaviour or development of someone or something over time 密切關(guān)注 ( 某事的進(jìn)展 ) . The progress of each student is tracked by puter. The study tracked the careers of 1226 doctors who trained at the University of Michigan Medical School. 10. morph into to develop a new appearance or change into something else, or make something do