Find out how the dog in this story saved his master's life.

找找看这则故事中的狗是怎么救了他主人的生命的。

I have known my master all my life, but have never seen him so agitated.

我认识我师傅一辈子，还从来没见他这么激动过。

But when young ardor is set brooding over the conception of a prompt deed, the deed itself seems to start forth with independent life, mastering ideal obstacles.

但是，当年轻的热情开始酝酿一项迅速行动的构想时，行动本身似乎以独立的生活开始，克服了理想的障碍。