They mostly began to reign as old men, and their reigns were short, averaging less than two years each. 赫伯特·乔治·威尔斯.世界史纲.
We travelled at least eighteen miles an hour, when at full speed, and made the whole distance averaging probably as much as twelve miles an hour. 尤利西斯·格兰特.U.S.格兰特的个人回忆录.