形容词
中文翻译：不稳定的
同义词：
['unsteady', 'unstable', 'shaky']
例句：
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1.The building was built on a rocky slope and is therefore unstable.
这座建筑建在岩石斜坡上，因此不稳固。
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2.The old car is unstable and needs to be repaired urgently.
这辆旧车不稳固，需要紧急修理。
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3. The ground was unstable due to the recent heavy rain.
由于近期的大雨，地面变得不稳固。