70　as far as和as long as

① as far as有两种含义：①表示“就……而言”；②表示“到……地点”。

As far as I know，he is very honest. 就我所知，他很诚实。

They strolled as far as the beach. 他们散步到海边。

This is the only thing we can do，as far as I see. 就我所知，这是我们唯一能做的事。

As far as I can understand it is quite out of his power. 就我的理解，这真的超出了他的能力。

As far as I can remember，they are all honest and hardworking men. 在我的记忆里，他们都是诚实、勤劳的人们。

② as long as也有两种含义：①表示“只要”，这时也可说成so long as；②表示“长达……之久”。

You can succeed as long as you try your best. 只要竭尽全力，你就会成功。

He felt free and happy，as long as he was at home. 只要他一回到家，就感到自在且快乐。

As long as you can keep away from them，you are safe. 只要你远离他们，你就是安全的。

He stayed in the middle school as long as four years. 他在那所中学里待了四年之久。