has been a defining trait of politics since in 1991."

VOA: standard.2009.11.01

Anyway the only point I'm making here is, paranoia is a healthy human trait.

总之这里我想说的就一点，偏执是一个正常人类的特质。

麻省理工公开课 - 计算机科学及编程导论课程节选

So this--the seeking out fat, sugar, and variety is a highly evolved, adaptive evolutionary trait.

脂肪,糖以及饮食的多样性的与,适应进化的特性是分不开的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

This was a constant trait.

这是他不变的特质

耶鲁公开课 - 欧洲文明课程节选

And in chemistry, just like in any discipline, you have all types of scientists, but also all types of personalities, and unfortunately Pauli had a personality that was known for, first of all, being very arrogant, but also the very unfortunate trait of taking other people's scientific ideas as his own.

在化学里，就像在任何学科中一样，有各种各样的科学家，也就有各种各样的性格，不幸的是，Pauli的性格，是以傲慢闻名，另外一个特点就是喜欢,把别人的观点占为己有。

麻省理工公开课 - 化学原理课程节选