冥想的艺术有助与促进放松和警觉的完美结合。
The art of meditation helps to promote a beautiful blend of relaxation and alertness.
当他走过小情侣身边时，他翘起大拇指朝男孩笑了一下，好像他们是同谋一样。男孩放松了警觉，在把脸转开前咧嘴笑了一下。
When he walked past the couple, he raised a thumb and gave the boy a smile, as if they were conspiring comrades; the boy, caught off guard, grinned disarmingly before turning his face away.
研究人员认为，手机辐射可能会刺激大脑的应激系统，使人更警觉，精神更集中，放松及入睡的能力因此减弱。
It is because cell phones affect the areas of the brain responsible for activating and co-coordinating the stress system, making it harder for people to fall asleep, researchers said.
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