I cut out a lot of brand new strings so that I can restring the racquets the day of the match!

我要多崭新的线以便在比赛当天能给线。

From this point simply swing forward and up and the racquet will naturally become vertical at contact, provided that you swing from the shoulders and do not get too wristy.

从这点，假定网在接触点下面一呎，只是向前和向上挥, 如此网将自然地在接触中变成垂直，假设你是从肩膀挥而且不是太用到手腕的话。