I must go with him and protect the nation against him as far as I could.

VOA: special.2010.03.27

It varies with the square of distance so it goes - in order to go twice as far it takes four times as long.

速度是与距离的平方正相关的--,如果要扩散两倍的距离要多花四倍的时间

耶鲁公开课 - 生物医学工程探索课程节选

and got to the stage where, I was probably as far as I could go with my career

然后登上舞台，这就是我能达到职业的最高点了，

从澳大利亚到英国 - SpeakingMax英语口语达人