behavior/ bɪˈheɪvjər /

1.noun[u] 

品行,态度,风度

The reality is that public understanding of abnormal behavior is fairly limited.
现实是公众对异常行为的理解相当有限。
2.noun[u] 

(指物体或机器零件等在特定条件下的)反应,运行情况

Human behavior is much more complicated than the behavior of atoms, liquids, or planets.
人类行为比原子、液体或行星的行为复杂得多。
The behavior of small particles can be studied in experiments.
微粒的活动方式能够通过实验来研究。
3.noun[u] 

行为,行动,举止

His erratic behavior scared the other students.
他的古怪举动吓坏了其他同学。
4.noun[u] [Psychology] 

生物习性(指生物对内部或外界刺激所做出的行为与反应)

This type of dog is known for its violent behavior.
这种狗因为其凶猛的表现而出名。