名词
中文翻译：草皮底部
同义词：
['grass bottom', 'turf floor']
例句：
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1.The new soccer field has a turf bottom that is soft and easy to walk on.
新足球场有一个草皮底部，柔软且易于行走。
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2. The grass was so tall that it covered the turf bottom of the tent.
草长得很高，覆盖了帐篷的草皮底部。
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3.The turf bottom of the lawn was stained with mud from the rain.
草坪的草皮底部被雨水染上了泥巴。