walk behind single drum 手扶式单轮压路机
walk single
走单
以上为机器翻译结果，长、整句建议使用 人工翻译 。
They peer down alleys where you can only walk single file.
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Because he never made it to home plate, the final score of the game was changed from 7-3 to 4-3, and Ventura was given credit for a walk-off single.
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The best we could hope for, I predicted, was that Loretta got a single or worked a walk to move Youkilis into scoring position.
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