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

Kristin: …works the scapula and then you can do the opposite arm, and you know, we're on the computer and the Blackberries all day long.

克里斯汀：……这个动作可以锻炼肩胛骨，然后你可以换另一只胳膊。

youdao

Kristin: …works the scapula and then you can do the opposite arm, and you know, we're on the computer and the Blackberries all day long.

克里斯汀：……这个动作可以锻炼肩胛骨，然后你可以换另一只胳膊。

youdao