I was working on my knuckleball. It needed more work.
当时我正在练习投不旋转球，还需要更多的练习。
Shifting an Internet friendship into the real world trickier a knuckleball.
将网络友谊搬到现实世界要比投蝴蝶球更加困难。
There are only a few successful knuckleball pitchers playing professionally today.
只有几位成功的指节球投手目前在打职业棒球。
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