I think you have good
background in (某一领域), which is very
important for our team. If you have time, you should
read textbooks,
such as
(某一本书)
Another important topic is (某一方向), on which you have done some work.
So, I would encourage you to prepare for the
application while reading more on research topics.
It is more important for PhD students to do research
than mere high scores in tests.