词汇讲解：
1. peer n.贵族；同辈; 同龄人
例句：Children are easily influenced by their peer.
孩子很容易受同辈影响。
2. emphasis n. 强调,重视,重点
例句：They put emphasis on quality rather than on quantity.
他们重质不重量。
3. benefit vt. 对...有益,有益于
例句：The sea air will benefit you.
海边的空气对你有益。
4. confusing adj. 莫名其妙的, 难以理解的, 不清楚的
例句：The instructions on the box are very confusing.
盒子上的使用说明含混不清。
5. demonstrate vt.说明, 演示；论证, 证明；显示, 表露
例句：All of those demonstrated the correctness of his analysis.
这一切都证明了他分析的正确性。
6. diagram n. 图解, 简图, 图表，示意图
例句：The engineer drew a diagram of the bridge.
工程师绘制了一幅这座桥的示意图。
7. sponsor vt.赞助, 发起, 主办
例句：The United States sponsored the important meeting.
美国主办了那次重要的会议。
8. expertise n. 专门知识或技能
例句：We were amazed at his expertise on the ski slopes.
他斜坡滑雪的技能使我们赞叹不已。
9. curriculum n. 总课程，（学校等的）全部课程
例句：The student is very knowledgeable because he also studies things not in the curriculum.
这个学生知识很丰富,因为在学校课程以外他还
学习别的东西。
10. lag vt. 落后于;滞后于
例句：The child lags his peers in intellectual development.
这孩子在智力发展方面比同龄人迟缓。
11. passion n. 激情, 热情
例句：He could not control his passion.
他无法控制自己的激情。
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