形容词
中文翻译：永久的
同义词：
['eternal', 'everlasting', 'unchanging']
例句：
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1.The decision was made for the sake of the company's long-term success.
这个决定是为了公司的长期成功。
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2. The river flows perpetually through the valley.
这条河不断地流经山谷。
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3. The permanent marker on the wall is a reminder to always be mindful of our actions.
墙上的永久性标记提醒我们总是要谨慎行事。