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1.human rights 人权
例句：In the treaty both sides pledge to respect human rights.
双方在条约中都许诺尊重人权。
2.child labour 童工
例句：They have promoted child nutrition, health and schooling and reduced child labour.
它们促进了儿童的营养、保健和学校教育，减少了童工现象。
3.take part in 参与
例句：When you take part in any performance, you get out as much as you put in.
你参加任何活动，你投入多少力量就会得到多少收获。
4.a number of 许多
例句：The speaker can extemporize on any of a number of subjects.
该演讲人对若干题目中的任一个都能即席发言。
