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瓦尔萨尔瓦动作
nurs. Valsalva maneuver
space Valsalva maneuver (人体长时间正加速度时,关闭声门强行呼气以增强抗荷耐力)
瓦尔萨尔瓦 动 作: 1 phrase in 1 subject
Surgery1