如果罗伯特.富尔顿的这次驾驶摩托车周游世界一直是他一个人完成的话，他也许真是一个非同寻常的人，因为这是一次非常危险的旅行，有些专家说，他能够活下来很幸运。

Robert Fulton would be considered an unusual man if this long trip was all he did. It was a dangerous thing to do.

youdao

我想驾驶火箭是很危险的，是吗？

I suppose it was very dangerous to fly a rocket, wasn't it?

youdao

高速驾驶一向是很危险的。

Travelling at speed has always been risky.

youdao

高速驾驶一向是很危险的。

Travelling at speed has always been risky.

youdao