老师用一个笑话缓和了教室里紧张的气氛。
The teacher used a joke to ___defuse the tense atmosphere in the classroom.
他的幽默话语化解了会议中的紧张气氛。
His humorous remarks ___defused the tension in the meeting.
专家们小心翼翼地拆除了炸弹的引信,防止它爆炸。
The experts carefully worked on ___defusing the bomb to prevent it from exploding.