她沿着昨天的路线往回走，试图找到丢失的钥匙。

She ___retraced her route from yesterday to find the lost keys.

老照片让他重新回到那段快乐的童年时光。

The old photos helped him ___retrace those happy childhood moments.

她仔细地重新描绘了这幅画的所有线条。

She carefully ___retraced all the lines of the painting.