所有表格都应该用要回顾的研究的代表性样本进行预试验。
All forms should be pilot tested using a representative sample of the studies to be reviewed.
研究人员选取了1,398个18岁以上的人作为代表性样本进行研究。
The findings were based on a representative sample of 1, 398 people over age 18.
研究人员选取了1,398个18岁以上的人作为代表性样本进行研究。
The findings were based on a representative sample of 1,398 people over age 18.
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