記得他講過 Valsava Maneuver (閉住呼吸,用力呼氣)時,說這個動作就是拉屎攥拳頭。
記得他講過 Valsava Maneuver (閉住呼吸,用力呼氣)時,說這個動作就是拉屎攥拳頭。
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