It sped downhill at the end of the race and its driver had a lot of trouble trying to stop it
问题描述：
It sped downhill at the end of the race and its driver had a lot of trouble trying to stop it
求这句话中trouble trying的详解,句中的意思是费了很大的劲,为什么用这两个词来表示费劲?
答
have trouble doing sth.表示做某事比较艰难,这个是固定句型啊,都是这么用的.