Wallets containing the charity CARDS and the control sample were least likely to be returned, with rates of 20 and 15 per cent respectively.
放有慈善卡的钱包以及对比组的钱包归还率最低，分别为20%和15%。
Wallets containing the charity CARDS and the control sample were least likely to be returned, with rates of 20 and 15 per cent respectively.
放有慈善卡的钱包以及对比组的钱包归还率最低，分别为20%和15%。
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