stratified purposive sample.
分层蓄意样本
Teaching is a purposive and rewarding activity.
教书是一种有目的的, 反思性的活动。
The central doctrine of Hegel's philosophy is the idea of purposive evolution.
黑格尔哲学的中心教义是有目的进化发展的思想。
In much of the popular commentary, this conclusion was stated in highly purposive terms.
这类评论很多, 而其结论表述尤为明显。
The history of sport probably extends as far back as the existence of people as purposive, sportive and active beings.
体育的历史可以追溯到人类有目的性的嬉戏和运动早期。
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