This is advance single arm drill where the opposite arm is not balancing in front.

这是升级了的单臂训练，反向的手臂没有放在前面用以平衡。

youdao

Then the subjects were told to return to that spot with either the same arm or the opposite arm.

然后告诉受试者返回同侧上肢或对侧上肢开始时的位置。

youdao

You note that she's exaggerating the body roll by rotating the opposite arm that she's not using out of the water.

注意她将对侧闲置的手臂转出了水面，夸大了身体的滚动效果。

youdao

Thomas describes a skillful overhand throw as an uncoiling in three phases: step (with the foot opposite the throwing hand), rotate (with hips first, then shoulders) and whip (with the arm and hand).

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Aly Cissokho's shot certainly hit Chalme's arm, but it hardly looked intentional as the defender was sliding across to block and looking in the opposite direction.

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