never backward
意思是:永远不要退却
例句
1.Never go backward. attempt, and do it with all your might.determination is power.
永远不要退却。要尝试,并全力以赴。决心就是力量。
2.I am a slow walker, but I never walk backward.
我走得很慢,但我从来不后退。(林肯)
3.I walk slowly, but I never walk backward.
我走的很慢,但我从不后退。