The police searched the length and breadth of the country.

【length】警方搜遍了全国各地。

He joined expeditions of explorers and prospectors, he searched the length and breadth of southern California for even the slightest bit of information or indeed, of hope they were still alive.

他加入了探险队和勘探者的队伍，他搜遍了南加州的每一个角落，哪怕是一点点的信息，甚至是一丝他们还活着的希望。