中文释义:adj. 永久的;无期限的
英文释义:continuing for a long period of time without interruption
商业例句:
the perpetual emptiness of outer space
外太空恒久不变的空旷虚无
the creation of a perpetual union
永久联盟的创立
Nothing seems to dampen his perpetual enthusiasm.
似乎没有什么能让他那持久的热情消退。
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