v.由原路返回；走回头路
This will often cause them to backtrack. 这往往会导致他们走回头路。
The path suddenly disappeared and we had to backtrack. 小路突然消失了，我们只得沿原路折回。
A spate of negative stories and the government may backtrack. 一旦负面消息大量出现政府就会走回头路。
adj.回溯；回溯法
动词backtrack的现在分词形式.
