DESIGN: Cluster sampling and cross-sectional investigation.(设计:整群抽样,横断面调查。)
Some of you delight to flaunt in our faces the warning against sectional parties given by Washington in his Farewell Address.(你们有些人喜欢当着我们的面卖弄华盛顿在他的告别演说中提出的对地方主义的警告。)
So this will be the length of the femur d and this will be the thickness, d A and this will be the cross-sectional area A.(所以这就是股骨的长度,这是它的厚度,这是它的横截面积。)
Everyone found a seat on a dilapidated sectional sofa that relatives had given to the family.(大家都坐在亲戚们给他们的那张破沙发上。)