随便的英文：
casual

参考例句：

It is foolish to haphazardly adventure.
随便冒险是愚蠢的。

Haphazard answers are usually wrong.
随便的回答往往是不对的。

No haphazard hit-or-miss methods will do.
任意的、随便的方法是不行的。

This is a scratch of the pen.
这是大笔一挥，匆促而随便写就的。

Help yourself to anything you like
你喜欢什么随便吃。

Help oneself to; take without asking
自己取用;请随便用

It's a secret,so don't go shooting your mouth off about it.
这是秘密,别随便乱说.

He who Buys what he does not need will often need what he cannot Buy
平时随便买,需时无钱买

A man may divorce his wife easily in many Moslem countries, but she cannot divorce him.
在许多穆斯林国家，男人可以随便提出离婚， 而妻子则不能。

He had cultivated the ability to catnap at odd moments during a day.
他磨练了一副能够在随便什么时候打个盹儿的本领。

casual是什么意思：
adj. 偶然的；随便的，非正式的；临时的

casual employment at a factory;a casual correspondence with a former teacher.
工厂的临时雇佣人员；与先前老师的不定期通信

A casual saunter around the shops.
逛商店。

He endued with casual dress.
他穿着便服。

To discuss in a casual or frivolous manner:
以漫不经心或琐碎的方式议论。

He acted as a casual browser.
他扮演一个闲逛的人。