Now lower back down slowly and controlled while inhaling through your nose, just until your shoulder blades touch the ground. Do not let your head touch the ground and repeat.
现在用鼻子吸气，慢慢躺下，但不要让头部接触地面。
This is all very well, but the physicist comes along and shows that you never bump into anything: even when you run your head against a stone wall, you do not really touch it.
这当然不错。不过，一个物理学家会过来，他会向你展示，你永远也不会碰撞上任何东西，即使你用你的脑袋猛地撞上了一道石墙，你也不会真正地碰上它！
Slowly drop your head to the left, trying to touch your left ear to your left shoulder.
慢慢地把头偏向左边，试着让左耳接触左肩膀。
After a year of doing part-time hobbyist catch-up math, you're going to be able to do a lot more math in your head, even if you never touch a pencil to a paper.
在做了几年的业余数学爱好者之后，你可以在脑海里做很多数学题，即使你从没碰过笔和纸。
After a year of doing part-time hobbyist catch-up math, you're going to be able to do a lot more math in your head, even if you never touch a pencil to a paper.
在做了几年的业余数学爱好者之后，你打算做更多的数学，甚至你从没碰过铅笔和纸。
Inhale, raise your hands over your head, arms straight until palms touch.
吸气，双手举过头上，手臂伸直直到手掌碰触。
Inhale, raise your hands over your head, arms straight until palms touch.
吸气，双手举过头上，手臂伸直直到手掌碰触。
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