Subjects have to pedal on the exercise bike and keep their heart rate up.

受试者必须踏上健身单车并保持心率。

Meantime, Toyota, expanding its recall of vehicles whose gas pedals may be malfunctioning.

同时, 丰田, 扩大召回其油门踏板可能失灵的汽车。

Even if we tried getting everyone to press the pedal on 3-2-1-now would be challenging.

即使我们试图让每个人都倒数着 “3,2,1” 踩下踏板， 依然十分困难， 也不一定能实现。

Well, before you pedal off, let's reveal the answer to today's question.

在你骑车离开前，让我们先揭示今天问题的答案。

Then he pedalled all the way to Australia!

后，他一路蹬船前往澳大利亚！

I suddenly pressed the brake pedal hard and we were both thrown forward.

我然用力踩紧刹车踏板，结果我俩的身体都向前冲去。

Hey, Squinty, the gas pedal's on the right! All right, hang on.

，眯眯眼，油门在右边! 好的，等等啊。

From the economy to health, Henry believes everybody wins when they harness the power of pedaling.

无论是经济方面还是健康方面，亨利都相信只要大家骑起自行车，就都是赢家。

That's about how fast you can go pedaling on your bike!

那差不多就是你骑自行车的速度！

How fast do you need to pedal so you're stable?

你要踩多快才能平稳前进？

I'm gonna move myself closer to the brake pedal for added force.

让我把座椅往前移一点，更靠近剎车踏板，方便待会用力。

Turn the pedal backward a little and then step forward.

把踏板往后转一点点，再往前踩。

But there was more to do on the boat than just sleep and pedal.

但在船上除了睡觉和蹬船，还有很多事情要做。

Imagine you enter a car with no steering wheel, no brake or accelerator pedals.

设想一下，你进入了一辆没有方向盘、刹车和油门的汽车。

Many pedal their tricycles, but most of them prefer to push or drag them.

很多孩子用脚蹬车，但多数孩子更愿意推或是拉着三轮车。

Varn says many children struggle to do this. They look down at the pedals instead.

瓦伦表示，许多孩子很难做到这一点。他们会低头看着脚踏板。

She managed to pedal her bicycle slowly up the hill and was highly praised.

她设法骑着自行车慢慢上了山，受到大家高度赞扬。

The gas pedal controls the amount of air and subsequent fuel released into the chamber.

油门踏板控制空气量和随后被释放到气缸里的燃料量。

The children learn riding skills, from balance and pedaling to turning, starting and stopping.

孩子们会学习骑车的技巧，从平衡踏板到转弯，从开始到停止。

That's before postage stamps were invented, before light bulbs, even pedal bicycles.

那是邮票发明前，甚至是灯泡和脚踏自行车前。