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1.The fastball was a surprise to the batter, causing him to stumble backwards.
快速球让打击者惊讶，导致他向后摔倒。
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2.The slugger's powerful swing caused the ball to fly out of the park.
这位击球手有力的挥棒使球飞出了本垒。
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3. The first baseman had to make a quick decision about where to throw the ball.
一垒手必须迅速决定将球投到哪里。