形容词
中文翻译：平坦的
同义词：
['straight', 'level', 'flat-bottomed']
例句：
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1. The road is very flat, so it's easy to drive on it.
这条路很平坦，所以很容易开。
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2. The table is flat, so it can be easily wiped clean.
桌子是平的，所以很容易擦干净。
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3. The floor of the room is flat, which makes it easy to clean.
房间的地板是平的，这使得清洁变得容易。