食指( index finger的名词复数 );

Keep the thumbs and index fingers pressing into the floor . Straighten the arms!
大拇指和食指用力下压. 伸展手臂!
来源:互联网摘选Firm the outer arms and press the bases of the index fingers actively the floor.
牢固手臂外侧并把食指的根基积极地压向地板.
来源:互联网摘选Control the floss by pinching it with index fingers and thumbs like this.
通过示指和拇指的牵拉来控制牙线.
来源:网络文摘精选Spread your palms , index fingers parallel or slightly turned out, and turn your toes under.
食指互相平行, 或者轻微转向外, 并转脚趾向下.
来源:互联网摘选
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