When these folks want to return, they simply wave a white flag and the conductor stops the train for them.
当村民们想要搭乘火车时只要挥动一面白旗，售票员就会让火车停下来。
2
When she stops by your desk, you know she's setting up camp, and you repeatedly glance over her shoulder, hoping to flag down a passing colleague who can rescue you.
当她走过你的办公桌，你知道她要安营扎寨了，你不停朝她的身后瞟几眼，希望找个过往同事能救你。
3
He waves the white flag (gives up, stops quarreling) with his girlfriend.