He was able to stop the train without accident.

他能安全地停住火车。

Such as easily as hard, but the world without accident, no luck!

成如容易却艰辛， 世界上没有意外，没有运气！

They came to the top of the stairs without accident, and entered the little sitting-room.

他们安全到达楼顶，然后进入小的起居室。

As soon as he reached a greater height, conditions became much steadier, and he finished his journey without accident .

他一飞上一定的高度，情况就稳定多了。他完成了这次飞行，没有发生任何事故。