Children's words and actions are often fairly random.是什么意思？

Children's words and actions are often fairly random.

小孩子的言行常常是随性而为。

words

n. 字( word的名词复数 )，（说的）话，诺言，口令；

例句
She felt as if his words had granted her absolution.
她感觉他的那番话好似给她下了道赦令。

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

actions

n. action，行动( action的名词复数 )，作用，动作，积极的活动；

例句
Jack was the sort of man who did not like his actions questioned.
杰克是那种不喜欢别人质疑自己行为的人。

are

vi. （用于第二人称单复数现在时，第一、三人称复数现在时）是；n. 公亩（等于100平方米）；

例句
We are scared to abandon ourselves to our feelings in case we seem weak or out of control.
我们不敢放纵自己的情感，以免显得太过软弱或缺乏自制。

often

adv. 常常，经常，时常，再三；

例句
Genetic abnormalities are more often associated with faults in paternal DNA than in maternal DNA.
相对于母本DNA,基因畸变往往更多地与父本DNA上的缺陷相关。

fairly

adv. 适当，相当地，公平地，完全，简直，清楚地；

例句
The idea fairly bristles with controversy...
这个想法存有诸多争议。

random

adj. 任意的，随机的，胡乱的；n. 随意，偶然的行动；

例句
Three people were killed by shots fired at random from a minibus...
3个人被从一辆面包车中发射的乱弹打死了。