若无其事

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

在法庭上，甚至当法官命令他赔偿一千镑时，他仍然表现得若无其事。

He behaved as if nothing had happened.

他装作若无其事的样子。

He sauntered casually through the door.

他若无其事地走过。

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

装做对自己的失调和苦恼若无其事，但是实际上是为自己的健康状况非常发愁的人。