您要查找的是不是：
- step - by- step backward algorithm 逐步倒推法
- Search backward algorithm for problem of snake in box 盒子中蛇问题回溯算法
- Does your handwriting slope forward or backward? 你的书法向前斜还是向后斜?
- Youth looks forward and age backward . 青年展望未来，老人回顾过去。
- She kept moving backward ( s ) and forward ( s ). 她不停地来回走动。
- You can travel forward and backward through time. 你可以通过时间穿梭于过去和未来。
- My foot caught in a creeper and I pitched forward. 藤蔓缠住我的脚，使我向前倒下。
- Einstein put forward his new theory of relativity. 爱因斯坦提出了相对论的新学说。
- We look forward to the return of spring. 我们期待着春天的到来。
- Youth looks forward and age backward. 青年展望未来，老人回顾过去。
- Many activists have come forward. 涌现了大批积极分子。
- One step backward / forward, everyone. 向后退一步/向前进一步。
- They looked forward very much to seeing him again. 他们非常盼望再次见到他。
- He has decided to go forward with his plans. 他己决定实施自己的计划。
- She leaned forward and whispered the news to him. 她探过身去，低声把消息告诉了他。
- The sixth man went forward to feel the elephant. 第六个瞎子走上前去摸大象。
- The toy robot moved forward with quick jerky steps. 玩具机器人一颠一颠地走得很快。
- She rushed forward in contemning dangers. 她不顾危险往前冲。
- Mind you, face forward and attend to the teacher! 请注意，把脸掉向前方，听老师讲话。
