过去的几年里我们一直努力工作。
We have worked hard over the last few years to lay this foundation.过去几年来,我们在努力打好这个基础。
Although we may put forth our best efforts in training and racing, progress doesn't come nearly as rapidly or easily when you've been working hard over the course of months and years.而在我们已经努力训练了几个月以及几年之后,尽管在训练和比赛中付出了最大的努力,那进步也不会那样迅速和容易了。