All right, can you show me the perfect sit up?

那你可以给我们示范一个完美的仰卧起坐？

Gymnasts have to be strong. Exercises like pull-ups, push-ups, and sit-ups help build muscles.

体操运动员必须强壮。像引体向上、俯卧撑和仰卧起坐这样的练习有助于增强肌肉。

Repeat steps four to six for the rest of the sit-ups.

重复步骤四到六，完成其余的仰卧起坐。

A dozen of these sectaries of Tingou lay flat upon their backs, while others, dressed to represent lightning–rods, came and frolicked on their noses, jumping from one to another, and performing the most skilful leapings and somersaults.

首先是有十二三个这种" 天狗神派" 的演员仰卧在台上，接着又来了另一些长鼻子伙伴跳到他们那些象避雷针一样竖立着的鼻子上，他们在这些鼻子尖上蹦跳，跃，从这个鼻子到那个鼻子来回表演着各种令人难以相信的绝技。

A very small observational study in which people could sleep however they preferred found that those who slept on their right side slept slightly better than those on their left, followed by those on their backs.

一项非常小规模的观察性研究发现，无论人们怎样选择睡觉姿势，右侧睡觉的人比左侧稍微好一些，其次是仰卧的人。

For example, those who had been asked to develop a habit of drinking a glass of water at breakfast tended to be more successful than participants who were instructed to do 50 sit-ups each day.

例如，那些被要求养成早餐喝一杯水的习惯的人往往比那些被要求每天做50个仰卧起坐的参与者更容易成功。

Then he would have to do a set of physical exercises that his father had written out for him, he would earn his breakfast by doing a certain number of sit ups.

然后，他必须做一套他写好的体能训练，做一定数量的仰卧起坐，才能吃到早餐。

Mr Hazare, who has himself lost 6kg, is prone on a platform nearby, framed by a huge poster of Mahatma Gandhi, whose methods he has adopted.

哈扎尔先生本人，已经减轻了6公斤体重，仰卧于附近的一座平台之上，背景是一副巨型的甘地画像，他正沿用着甘地的方式。

They found that orangutans spent 3 times more of their sleeping time on their sides than they did on their backs.

研究发现猩猩侧卧睡眠时间是仰卧睡眠的 3 倍。

In terms of just general strength, I think pushups are great, sit-ups, planks, squats are fantastic to throw in.

从一般力量来看，我认俯卧撑是很好的，仰卧起坐，平板支撑，深蹲都非常棒。

But, uh, before I take my shirt off, I just need like ten minutes to do some crunches.

不过，脱掉衣服之前，我需要先做10分钟的仰卧起坐。

It's perfectly safe to float normally, reclining on your back with your head held above the seawater.

正常漂浮是完全安全的，仰卧着，头顶在海水之上。

This will be the best sit-up you have ever seen, Coach Hank.

这将是您见过的最棒的仰卧起坐，汉克教练。

They found that during their time in bed, people spent just over half their time on their sides, around 38% on their backs and 7% on their fronts.

他们发现，在床上的时间里，人们有一半多的时间侧卧，约38%的时间仰卧，以及7%的时间俯卧。

He certainly would not have recognised Passepartout in the eccentric mountebank's costume;but the latter, lying on his back, perceived his master in the gallery.

当时路路通穿着那样奇怪的古装，福克先生当然不会认出他来，可是在台上仰卧着的路路通却看到了他的主人坐在花楼上的包厢里。

What was interesting about this paper is that none of the positions he's presented show people sleeping on their backs.

这篇论文的有趣之处在于，他展现的这些姿势中，没有一个是仰卧的。

They use all kinds of things from a backpack with a softball inside to a ball in a sock on the back to a shark fin type thing to alarms that ring when you roll on your back.

这种疗法会用到各种东西，从装有软球的背包，到在背上挂一只装有球的袜子，再到能在你仰卧时响起警铃的鲨鱼鳍状物。

For instance, research into the sleep patterns of welders on container ships in Nigeria showed that those who slept on their back were more likely to suffer back pain, compared with those who slept on their sides.

例如，对尼日利亚集装箱船上的焊工睡眠模式的研究显示，那些仰卧睡觉的人比侧卧睡觉的人更容易患上背痛。

Controls spent around 30% of their sleep on their backs, those with NDD spent around 50% of their sleep on their backs.

控制组约用30%的时间仰卧睡眠，而 NDD 患者则会花近一半的时间来仰卧睡眠。

Those with neurodegenerative disease spent nearly twice as much time on their backs while sleeping.

神经变性疾病患者睡眠时仰卧的时间约常人的两倍。