1.encourage to 鼓勵
例句:The idea is to encourage people to get to know their neighbours.
其目的是促使人們結識鄰居
。2.a number of 一些
例句:And a number of African countries, too, are slipping through the net.
并且一些非洲國家也被漏掉了
。3.take place 發生
例句:The threatening strike did not take place after all.
可能來臨的罷工終究沒有發生
。4.at risk 有危險
例句:The disease is spreading, and all children under five are at risk.
這疾病在蔓延, 五歲以下的小孩都有危險
。