To compose oneself and hold one's breath; to be reverent, cautious, and awestruck; to show profound respect and restraint.
听到老师宣布的竞赛结果，同学们都敛容屏气，等待着最终的排名公布。
Hearing the competition results announced by the teacher, all the students composed themselves and held their breath, waiting for the final rankings to be revealed.
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