Cook told Clara how he had become blind over time and shared stories of his days as a travelingsalesman.
库克告诉克拉拉他是如何随着时间的推移而失明的，并分享了他作为旅行推销员的故事。
2
He shared stories of his days as a travelingsalesman.
他分享了自己还是旅行推销员时的故事。
3
The travelingsalesman problem is a favorite math conundrum: if a salesman has to visit a bunch of cities, how do you get him to all of them once via the shortest possible route.