考研To control noise is to demand much self-discipline (annoyance arises often from lack of common courtesy), a sense of proportion (there is usually a conflict of interest if a noise is to be stopped), the expenditure of money (and it is far more economical to do this early rather that late), and finally, technical knowledge.
控制噪音需要自律（烦恼往往源于缺乏礼貌）、比例感（如果要停止噪音，通常会有利益冲突）、金钱支出（早做比晚做更经济），最后是技术知识。
1981年全国硕士研究生入学统一考试英语试题
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