knuckleball

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。

Shifting an Internet friendship into the real world can be trickier than hitting a knuckleball.

将网络友谊搬到现实世界要比投蝴蝶球更加困难。

But Wakefield used his trademark knuckleball to set up a sneaky fastball, ducking and weaving the New York bats in tight spots.

但伟克飞尔用他的蝴蝶球搭配著诡异的直球，屡次在紧要关头解决洋基的打者。

knuckleball

n. [棒](投手投出的)不旋转球