This paper discuss the ways of debugging: brute force, cause elimination and backtracking.

Backtracking techniques can be encoded by fairly short solution programs.

回溯演算法可以写成很短的解题程式.

Backtracking to master the application of retrospective method with 0-1 knapsack problem.

掌握回溯法的应用用回溯法求解 0-1 背包问题.

The backtracking mechanism is an important facility for programming in logic.

回溯机制是逻辑程序设计的重要设施.

Leonard jumped in his car and started backtracking.

伦纳德跳进车里，开始原路折返。

Some backtracking is probably inevitable.

有时改变决定可能是不可避免的。

Features: 1. This car backup light with light and sound warning function . 2.

特点: 一、本产品属于一种具有声、光报警功能的汽车倒车灯.

At a certain age, it's not viable for men to take a backward step into unskilled work.

到了一定的年龄，就不可能再退回去干不需要技能的工作。

Many dentists will no longer treat National Health Service patients, which is a big backward step in this country.

许多牙医不再为依靠国民保健制度的病人看病，这是该国的一大倒退。

He took two steps backward.

他后退了两步。

She strode past him without a backward glance .

她大步从他身边走过，都没有回头瞧他一眼。

The rainy season is backward this year.

今年雨季来得晚.

It must be a hard life, working as a nurse in a backward country.

在落后的国家当一名护士,生活必定是艰苦的.

Because of his long illness, Tom is backward in his studies.

因为汤姆长期生病, 所以在学习中成绩落后.

The child is backward in his studies.

这孩子的学习成绩属下游.

The backward place has changed into an industrial centre.

那落后的地方变成了工业中心.

You have put your hat backward ( s ).

你把帽子戴倒了.

The crops are early [ backward ] this year.

今年的庄稼早 [ 晚 ] 熟.

The crops are backward this year.

今年的收获期较往年晚.

He stepped backward and fell over the cliff.

他向后退了一步就从悬崖上掉下去了.

He did a brilliant backward somersault.

他翻了个漂亮的后翻跟头.