The upshot is that if the rider leans forward he travels forward, whereas if he leans backward the machine will stop and then go into reverse.

结果就是如果驾驶者向前倾斜身体它就向前行驶，可是如果他向后倾斜机器就会停止然后向相反方向行进。

youdao

The problem arose because astronomers had noticed that some planets in the sky seemed to stop, move backward and then go forward in a loop.

这个问题也就产生了，因为天文学家已经发现有些行星在天空似乎停止，向后移动，然后在一个循环。

youdao

The problem arose because astronomers had noticed that some planets in the sky seemed to stop, move backward and then go forward in a loop. Others appeared brighter at times and less bright at others.

这样，问题就来了，因为天文学家以前发现过，天上有些行星停顿下来，往后移动，然后再成环状向前移动，而其他行星看上去有时亮些，有时又不怎么亮。

youdao

The pitch made expansive shots difficult, and Sussex kept the scoring at a respectable rate, collecting the wicket of dangerous opener David Warner in the eighth over courtesy of a superb diving stop and direct hit from Dwayne Smith at backward point.

BBC: Sussex well beaten in first game

Some days, the rough weather forced her backward by up to 16km (10 miles) and she had to drop anchors to stop losing more headway.

BBC: First woman rows the Atlantic