火车头前的排障器。
The cowcatcher of a locomotive .
他的另一项贡献是建立英格兰的现代邮政系统、编写了第一种可信赖的保险精算表，以及发明火车头的排障器。
His other contributions included establishing the modern postal system in England , compiling the first reliable actuarial tables , and inventing the locomotive cowcatcher .
排障器