一条短信中你可以有数百个收件人。
For example, Americans routinely overestimate the share of black recipients of public assistance programs.例如,美国人经常高估公共援助计划中黑人受助者的比例。
If you just scramble a sentence, it's pretty useless because the recipients are never going to be able to reverse the process.如果你只是加密一个句子,这是毫无用处的,因为收件人没法将这个句子反加密出来。