1·The principal character in opposition to the protagonist or hero of a narrative or drama.
反面主角叙事文学或戏剧中与主人公或英雄相对立的主要人物。
2·Then, the principal character of a play, a novel, or a film is known as the hero of the story.
再者，一出戏剧、一本小说，一部电影的主要人物，也称为故事的主人公。
3·The notion of a house, or more specifically a room, as the principal character in a novel is an odd one.
对于一幢房屋或更确切地说是一个房间的见解，作为主要角色出现在小说中是一个异数。
4·The principal character in opposition to the protagonist or hero or heroine of a narrative or drama.
反面主角：叙事文学或戏剧中与男女主人公或英雄相对立的主要人物。
5·The third part is principal character of debris flow in the research area, involving its survey, law of distribution, main types, activity characters and development trend.
第三部分为研究区泥石流的主要特征，包括泥石流灾害概况、分布规律、主要类型、活动特点以及泥石流的发展趋势。
6·Chapter 2 describes the basic situation of Changshu floating population by using large amounts of sampling survey materials, and grasps their principal character accurately.
第二章充分利用抽样调查等第一手资料，详细描述了常熟流动人口的基本情况，比较准确地把握了常熟流动人口的现状特征。
7·We see America's character in Dr. Tony Recasner, a principal who opened a new charter school from the ruins of Hurricane Katrina.
我们看到里卡斯钠博士的美国特质，这位校长在卡特里娜飓风的废墟中开办一所新的特许学校。
8·Optical character recognition is the principal technology of computer intelligence man-machine interface.
机器字符识别是计算机智能化人机接口的关键技术。
9·This paper presented a new multi-template character recognition method based on principal component analysis(PCA).
本文提出了一种基于主元分析法（PCA）的多模板字符识别算法。
10·The authors present a new method to remedy the negative effect arising from slant vehicle license plates character segmentation and recognition based on principal component analysis (PCA).
为解决机动车牌图像倾斜将对其字符分割与识别带来不利的影响，提出一种基于主元分析(PCA)的车牌图像倾斜校正新方法。