委员会制定了关于网球场面积的规则。
The committee laid down rules about the size of tennis courts.
路易斯安那州正在以每30分钟一个足球场面积的速度失去湿地。
And Louisiana is already losing wetland: an area about the size of a football field every 30 minutes.
在今年的稻田作品中，一块足球场大小的面积里呈现了一名武士与一名武僧打斗的场面。
This year's creation is a football field-size picture of a samurai battling a warrior monk.
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