Jumping jack
01
开合跳, 跳跃杰克
an exercise that is performed by jumping from a standing position with legs both spread wide and the hands touching overhead and then returning to a position with the feet together and the arms at the sides
例子
The warm-up routine began with a set of jumping jacks to get everyone's heart rates up.
热身程序从一组开合跳开始，以提高每个人的心率。
She did a series of jumping jacks before starting her workout to loosen up her muscles.
她在开始锻炼前做了一系列开合跳来放松肌肉。
02
关节玩偶, 跳跳人
a traditional articulated toy made from paper or wood, featuring a jointed design that allows the arms and legs to move when pulled by strings or levers, creating a jumping or dancing motion when manipulated
