Volunteers were told to think about yawning while they breathed either normal air, pure oxygen, or an air mixture with an above-normal level of carbon dioxide.
当志愿者在正常的空气中、纯氧的环境下,或者混有超过正常的二氧化碳含量的空气中呼吸时,他们被要求要想着打哈欠。
Volunteers were told to think about yawning, while they breathed either normal air, pure oxygen, or an air mixture with an above-normal level of carbon dioxide.
当志愿者在正常的空气中、纯氧的环境下,或者混有超过正常的二氧化碳含量的空气中呼吸时,他们被要求要想着打哈欠。
Sometimes it's too much - I just want to be a normal child with a normal family.
有时候我真受不了- - -我只是想作一个普通家庭里的一个普通的孩子。
But improved treatments to ease the effects of the disease make it possible for many patients to live almost normal lives.
VOA: special.2009.04.07
But that wouldn't have been sort of a normal, everyday way to talk about a stranger in the ancient world.
但即便在古代,对陌生人这么称呼也不并不常见。
I just want to emphasize one more time, that the overwhelming normal situation is the first one I described, friendly relations.
我想再强调一遍,正如我最初所说的,两者之间大多情况下都是友好关系
应用推荐