keep a cool head
(biochemistry) Any of a group of oligopeptides, of plant origin, that have a cyclopeptide backbone bridged with multiple disulfide bonds
present participle of desequestrate
(idiomatic) To keep one's cool; to stay calm.
A push, thrust, or sudden blow, given by the head; a head butt. / A thrust in fencing.
救急外来の混乱の中で、主任看護師は冷静さを保ち、トリアージでチームを導かなければならなかった。
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