| 单词 | baseball umpire |
| 释义 | baseball umpire After retiring, he became a professional baseball umpire. Retrieved from Wikipedia CC BY-SA 3.0 In one study, researchers found that professional baseball umpires made more incorrect calls when the air was more polluted. Times,Sunday Times He practiced law before beginning his career in baseball umpiring. Retrieved from Wikipedia CC BY-SA 3.0 |
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