Allow your muscles to relax completely.

让你的肌肉完全放松。

《牛津词典》

These days, people appreciate a chance to relax.

目前人们很珍惜能放松的机会。

《柯林斯英汉双解大词典》

You cannot afford to relax your concentration for a moment.

你必须集中精力，一刻都不能松懈。

《牛津词典》

Albuterol helps to relax the muscles in the airways of the lungs and increases air flow.

VOA: special.2009.07.28

So this is where you'd go to relax, to make a business deal, to meet your friends, to chat, to try to have sex, try to meet somebody.

人们可以在那儿得到放松，谈谈生意，见见朋友，聊天，性爱，约会。

耶鲁公开课 - 新约课程节选

So I've been able to relax a little bit, get all my homework done early and hang out with friends.

所以我可以放松一下，放下所有的作业，和朋友去逛街。

自身时间管理方法 - SpeakingMax英语口语达人

But some farms tell guests just to relax -- it is a vacation after all.

BBC: Vacationing down on the farm

They say it will free up evenings to relax and spend time with their families.

BBC: Q&A: Commons reforms

Over time he has learnt to relax and savour each and every international appearance.

BBC: Morley drinking in the last chance saloon