- 1.   
折回,折返  -  
• Finally we retraced our steps to the gate of the park. 最后我们顺原路走回到公园门口。 - 2.   
重行(他人走过的路程或路线等)  -  
• retrace the Silk Road 重走丝绸之路 - 3.   
回忆,回顾;追溯(经过或情形)  -  
• Tears came out of his eyes when he was retracing the grey past days every time. 每次一想起往日那些灰色的日子,他就热泪盈眶。 - 4.   
探究…的源流  -  
• retrace one's family line 追溯家族世系