During a game, while sliding into third base, my cleat caught and pulled my foot to the right and backward as my body fell forward.(一次比赛，在进第三垒时，我的防滑钉被卡住了，身体朝前栽倒，脚腕却扭向右后方。)
You see how this epicycle theory could account for the seemingly backward motion of the planet.(你可以看到这个本轮理论是如何解释行星看起来像在做反向运动的。)
Shall we sway backward and forward, Mary, as if we were dervishes?(玛丽，我们要不要前后晃来晃去，就好像我们是托钵僧似的？)
If you could move at the speed of light, your time would stand still, if you could move faster than light, your time would move backward.(如果你能以光速运动，你的时间就会静止不动，如果你能以比光速快的速度运动，你的时间就会倒退。)
Mars, in contrast, has a wildly oscillating tilt and chaotic seasonality, while Venus, rotating slowly backward, has virtually no seasonality at all.(相比之下，火星有着剧烈的倾斜和混乱的季节性，而金星则缓慢地向后旋转，几乎没有实质上的任何季节性。)
He took two steps backward.(他往后退了两步。)
This country is going backward.(这个国家正在倒退。)
The diver flipped over backward into the water.(跳水运动员向后翻转跳入水中。)
The backward place has changed into an industrial center.(这个落后的地方变成了工业中心。)
She felt that going back to live in her home town would be a backward step.(她觉得回到家乡生活就是没出息。)
