凡是爱玩游戏的老铁们肯定对 double kill 这词儿不陌生，哪怕你不喜欢英语......昨儿个和同事小刘与Tony一起坐地铁去拜访客户，在路上小刘一直玩手机，还时不时兴奋地喊两声“double kill”~你说你玩就玩吧，但别带错道儿啊，关键他是唯一去过客户公司的人。
double back
走回头路，原路返回; 循原路折回; 折回；追溯；沿原路返回；重走（别人走过的路线）
【En】To turn around and go back the way you have come. 转身回到来时的路上。
To turn and go back in the direction you have come from. 按照你来的方向转身往回走。
To return to some thing or place after moving away from it, especially by following the same path taken when leaving. 返回离开某物或某地后返回，尤指沿着离开时走过的同一条路。
To retrace one's steps; to go back where one has already gone. 重走原路; 回到已经去过的地方。
【Scenario Listening 场景听力】
● We kept getting lost and having to double back on ourselves.
我们总是迷路，不得不折返回去。
● The driver doubled back and headed for Howard Bay.
司机原路折返，向霍华德湾驶去。
【Scenario Example 场景示例】
● I doubled back on my own trail.
我原路返回。
● I was walking to my car when I realized I'd forgotten my lunch on the kitchen counter and doubled back to get it.
我正朝我的车走去时，突然意识到我把午餐忘在厨房柜台上了，就折回去取。
● The deer doubled back on the hunter.
那只鹿折回向猎人扑去。
● In order to save time, you'd better double back.
为节省时间，你最好按原路返回。
● The road ahead was flooded so we had to double back.
前面的路已遭水淹，我们只好原路折回。
● The robber doubled back on the police, and they lost track of him.
强盗按照警察的原路折回，警察就找不到他了。
● Since we got lost, we'll need to double back and start over.
既然我们迷路了，我们得原路折回重新开始。
● The road doubles back, following the course of the river.
这条路沿着河道往回延伸。
● The trail up the mountain doubles back on itself several times.
上山的小径多次折回原处。
● The officer lost the suspect, who had doubled back on him.
这名警官追丢了嫌疑犯，因为他又原路折了回去。
● We drove past it and had to double back.
我们开车经过那里，只好原路返回。
● We realized we had taken the wrong road and had to double back.
我们发现走错了路，于是不得不原路返回。
● But Vicenza was half way from Venice to Verona, so if they did that they would all be doubling back.
但维琴察在威尼斯到维罗纳的半路上，所以如果他们这么做了，他们都得折回去。
