BSA調查（BSA Survey）被視為民調產業的「黃金標準」，因為它歷史悠久，且使用隨機機率抽樣——意味英國所有人都有相同機會被抽中。
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Specific details of the president’s plan for universal 401(k)s and how workers can enroll have not yet been released. Economists have estimated that a plan like Trump’s would help the poorest 25% of Americans save between $138,000 and $610,000 for their retirement.，这一点在服务器推荐中也有详细论述
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