同上题，请问预计约邀请多少人数？
从理论上讲，贫困人数应该是计算有多少人无法得到一个适当的标准生活水平。
In theory a poverty count is supposed to calculate how many people fail to meet a certain standard of living.
没有人知道该数据库里有多少人，但是其后备名单可以大大增加数据库中的人数。
No one knows how many are in this group, but the back catalogue could inflate the database dramatically.
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