评论
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1.encourage to 鼓励
例句：The idea is to encourage people to get to know their neighbours.
其目的是促使人们结识邻居。
2.a number of 一些
例句：And a number of African countries, too, are slipping through the net.
并且一些非洲国家也被漏掉了。
3.take place 发生
例句：The threatening strike did not take place after all.
可能来临的罢工终究没有发生。
4.at risk 有危险
例句：The disease is spreading, and all children under five are at risk.
这疾病在蔓延, 五岁以下的小孩都有危险。
