For technically difficult material, especially when power is needed, use the power thumb position: with both hands on the keyboard, extend the thumbs straight out, so that the thumbnails now face upwards towards your face (LH thumb on G3, RH thumb on G4). This position enables rapid play, makes optimum use of forearm rotation, allows complete relaxation, and utilizes the strongest muscles in the thumb: those powerful muscles that are used to push thumb tacks into a wall. Applying force in the weak position can cause pain and injury, not only to thumb muscles, but also elsewhere.
对于技术上较困难的材料,尤其是在需要力量的情况下,请使用力量拇指位置:用双手在键盘上,将拇指笔直伸出,使拇指甲现在朝上朝向您的脸(G3上的LH拇指,G4上的RH拇指)。这个姿势可以快速运动,充分利用前臂旋转,完全放松,并利用拇指最强壮的肌肉:那些用来将图钉推入墙壁的强壮肌肉。在弱处施加力不仅会导致拇指肌肉受伤,还会导致其他部位的疼痛和受伤。