童年既是单纯的一张白纸，又是色彩斑斓的世界，它既是对立又是统一的。
Childhood is a simple piece of paper, is a colorful world, it is both antagonistic and unified.
张：那是因为当代艺术变化万千，它没有一个统一的标准，是用直觉来判断的，而每一个艺术家都是一个独特模式。
Zhang: the explanation is due to the variation of contemporary art and there is no such thing as a unified standard. It is judged by intuition and each individual artist represents a unique mode.
本文利用正交试验，将析因设计、区组设计及统计分析统一于一张正交表上。
As we all know, the statistical analysis of an incomplete block design is quite troublesome, especially for a partially balanced incomplete block design.
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