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。
For example, you can send information abroad immediately, but mailing a letter might take a week or so.
例如,你能够马上发送信息到国外,但寄一封信可能要大约一周的时间。