名词
中文翻译：Unknown
同义词：
['permanent', 'durable', 'enduring']
例句：
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1. The alloy is known for its strength and durability.
这种合金以其强度和耐用性而闻名。
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2. The construction of the bridge was made with Permendur alloy.
这座桥梁的建设使用了Permendur合金。
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3. The material is highly durable and can last for many years.
这种材料非常耐用，可以持续很多年。