He appeared nonchalant in court even when the judge ordered him to pay ￡1000.

在法庭上，甚至当法官命令赔偿一千镑时，仍然表现得无其事。

He behaved as if nothing had happened.

装作无其事的样。

He sauntered casually through the door.

无其事地走过了那门。

She affected to be spunky about her ailments and afflictions, but she was in fact an utterly self-centered valetudinarian.

她装做对自己的苦恼无其事，但是实际上她是为自己的健康状况非常发愁的人。