行为的英文：
action
conduct
behavior
activity

参考例句：

We all condemn cruelty to children.
我们一致谴责虐童的行为.

Fair play; be above board;upright behavior
光明正大的行为

Juvenile Behavior.
幼稚的行为

A despicable act
卑鄙的行为

Rational Behavior.
理智的行为

Acts of severity
激烈的行为

Shameful conduct
可耻的行为

Irresponsible Behavior
不负责任的行为

a treasonable act such as espionage.
叛国行为，如间谍罪

There can be no appeasement with ruthlessness
对残暴行为是不能姑息的。

action是什么意思：
n. 行动；作用；情节；战斗；诉讼；姿态

The soldiers are in action.
士兵们正在战斗。

rouse to action
使奋起，唤起某人采取行动

override action
超驰控制操作

conduct是什么意思：
n. 举止；行为；品行
v. 表现；处理；管理；实施

Their conduct and etiquette are governed by the Code of Conduct for the Bar of the HKSAR.
律师的操守和业内成规，受香港大律师公会专业守则所约束。

The reporter was accused of unprofessional conduct.
那位记者被控有违反职业道德的行为。

Such conduct will compromise your reputation.
这些举动将会损害你的名誉。

behavior是什么意思：
n. 行为；举止；态度

changeable behavior.
可改变的行为

Be on your good behavior, now.
你要放规矩点。

His behavior was beyond bearing.
他的行为令人忍无可忍。