比较口语化的: 1.Have you finished? 2.8 to 12 times per group,and 4-5 groups are enough. 3.Muscles contracted and then relaxed?That's right1 4.Keep your body still.Only muscles go into action.
1、这个(器械)你用完了吗? are you done with this machine? 2、每一组做8到12次,做4到5组就差不多够了 do it eight to twelve times for each set, you‘ll be good with about four or five 3、感觉到肌肉收缩再舒张就对了 Relax your m...