她保持了镇定，按下了警报器。

She had the ___presence ___of ___mind to press the alarm.

弗兰克试图用极大的冷静将包藏在背后。

Frank tried to hide a bag behind his back with great ___presence ___of ___mind.

在紧急情况下，他的镇定挽救了许多生命。

In the emergency, his ___presence ___of ___mind saved many lives.