把这一句，留给此刻的你
It's always difficult, especially the U.S. Open, the last of the Grand Slams. It's always tough because you know, the season is very long. I really played a lot this year. Sometimes it's really hard to stay focused all the time because you're really tired after the whole season.
这总是很困难的，尤其是美网，最后一个大满贯。这总是很艰难，因为你知道，赛季很长。今年我打了很多比赛。有时候很难一直保持注意力集中，因为你整个赛季都很累。