初级英语单词at last和at length的区别用法

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这一对初级英语单词短语都有“终于”、“最后”的意思，但涵义跟应用处合有所不同。

At length 这个词组共有三个意思： （1）长时间地。例如：He spoke at（great）length．（2）详细地。例如：They treated the subject at length．（3）终于；最后。例：After flying for ten hours，they got to San Francisco at length．

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Before they climbed down the side of the cliff，they met with many obstacles，but they surmounted them at last．

从悬崖的侧面爬下来之前，他们碰到了良多妨碍，但终于把它们克服了。 

In spite of every obstacle，they have at last arrived at the destination．

只管阻碍很多，他们终于到达了目的地。 

After a voyage of five months，they at length arrived safe and sound．

经过五个月的航行，他们终于安全达到。

请留心，用初级英语单词length构成的介词短语很多，常见的有：

HongKong Exhibition Centre measures 200 metres in length． 内容来自

香港展览中心长达二百公尺。

They discussed this problem at great length．

他们非常具体地探讨了这个问题。容来自

They travelled through the length and breadth of the country． 

他们走遍全国。