Your gong fu has a lot of good and bad points, but I'd like to draw particular attention to problems in your footwork.
你的功夫优点和缺点并存,但我希望你能特别要注意你的步法。
The operation, which lasted for over four hours, proved to be very difficult because of the hard resin which covered the skin.
手术持续了4个多小时,非常难做,因为皮肤上覆盖着一层硬硬的树脂。