And then also, you're trying to stay very, very, very still because little movements with other parts of your body will affect the pitch, or sometimes if you're holding a low note --  -- and breathing will make it ...
然后，你努力保持静止不动， 因为你身体其他部位的小小的移动 都会影响到音高，有时你弹低音的时候， 然后呼吸，声音就……