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你不可能永远只在一块球场打球,而网球场又总是那么的不尽相同,也许有一天,你会突然来到一片更快速的球场,怎么办?击球节奏变了!——别慌,下面我来和你一起应对快速球场。
You can not always play on just one course, and the tennis courts are always different. Maybe one day, you will suddenly come to a faster course. What to do? The hitting pace has changed! - Do not panic Now let me deal with Quick Course with you.