what does "set" here means?

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收藏 2012-12-15

Twenty sets of parents waited in vain.
here sets means couple or not?

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2012-12-16 01:51:42

sets here means 'group' or 'groups', its vague term. it does not necessary infer as 'couple'

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2012-12-16 10:17:20

tigerwolf 发表于 2012-12-16 01:51
sets here means 'group' or 'groups', its vague term. it does not necessary infer as 'couple'

so how many couples are there?

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2012-12-16 13:23:06

牛穿风发表于 2012-12-16 10:17
so how many couples are there?

perhaps 20 couples

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