5. to stretch (one's) legs: to relax or to take a short break (久坐后,把腿舒展一下,或稍微休息一下) 　　

Let's take ten minutes to stretch our legs.(让我们先休息十分钟.) 　　

May I take a break so that I can stretch my legs?(我可以休息一会儿伸伸腿吗?) 　　

During the a long flight from the US to Taiwan, I normally stretch my legs every two hours. (在从美国到台湾的长途飞行中,我通常每两个小时起身走走.)