例句與造句

1. 4 . during the investigation of distinction in mathematical cognitive structure , the author uses statistical sampling method . by test - analysis , observation , conversation and exchanging with teachers , the qualitative and quantitative analysis is made
   在對(duì)高中生數(shù)學(xué)認(rèn)知結(jié)構(gòu)個(gè)體差異的調(diào)查研究中，筆者首先采用整群+分層抽樣的統(tǒng)計(jì)方法選取了樣本，然后通過(guò)問(wèn)卷測(cè)試?分析法、觀察法、談話法以及與數(shù)學(xué)教師的交流對(duì)調(diào)查結(jié)果做出了定量和定性的分析。
2. It's difficult to find statistical sampling methods in a sentence. 用statistical sampling methods造句挺難的