形容词
中文翻译：平坦的
同义词：
['straight', 'level', 'flat', 'level surface']
例句：
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1. The floor is very flat and easy to clean.
地板非常平坦，易于清洁。
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2. She moved the furniture to make more space in the room.
她移动家具以在房间里创造更多空间。
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3. The road is flat and straight for miles.
这条路直且平坦，有好几英里长。