形容词
中文翻译：不稳定的
同义词：
['unstable', 'unsteady', 'unstable例句：1. The bridge was overstable and had to be reinforced.（这座桥不稳定，需要加固。）']
例句：
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1. The bridge was overstable and had to be reinforced.
这座桥不稳定，需要加固。
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2. The old building is overstable and needs immediate repair.
那座旧建筑很不稳定，需要立即修复。
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3.The new design is overstable and may not hold up under heavy usage.
新设计不够稳固，可能承受不住重载。