Help yourself to something
随便───casual
She had a purposeful air, and it became evident that this was not a casual visit.───她一副无事不登三宝殿的神情，很明显，这不是一次随意造访。
She dresses with casual elegance.───她的穿着随意而不失雅致。
We are only casual acquaintances.───我们只是泛泛之交.
Her confession was simply tantamount to a casual explanation.───她的自白简直等于一篇即席说明.
He read love into her casual friendliness.───他把她偶然表示的友好误解为爱情.
The Danes had selfconfidence of conquerors, and their security precautions were casual.───这些丹麦人具有征服者的自信, 而且他们的安全防卫也是漫不经心的.
His casual, relaxed manner was very soothing.───他随意而放松的举动让人很快便平静下来。
The boy was cheeky and casual.───这个男孩嘻皮笑脸、随随便便。
The guests wore casual clothes.───客人们穿着便服.
Every movement, no matter how casual and spontaneous, needs to be worked out to the last detail.───对每一个动作，无论它显得多么随意和无意识，都不能放过一丝细节。
It was just a casual remark—I wasn't really serious.
To the casual observer, the system appears confusing.
They have a casual attitude towards safety .
He tried to look casual.
It's difficult for me to be casual about anything.
His eyes were angry, though he sounded casual.
I bumped into a casual acquaintance in town.
She usually wears smart/casual clothes.
The boy was cheeky and casual.