Average one out of ten travelers is killed or robbed by bandits on the road. 平均起來,十名旅行者當中就有一名被路上的強盜打劫殺害。
A statistician can have his head in an oven and his feet in ice, and he will say that on the average he feels fine. 一個統計學家能把頭在伸進火爐里,腳放在冰里,他會說平均起來他感覺好極了。