per·pet·u·al·ly
adverb/pəˈpetʃuəli/
/pərˈpetʃuəli/
- in a way that continues for a long time without stopping
永久地：以持续很长时间而不连续停止 - a perpetually changing environment
不断变化的环境
- a perpetually changing environment
- repeatedly, in a way that is annoying
一再反复的；无尽无休的；没完没了的 - a writer who is perpetually ignored by critics
一个永远被评论家忽视的作家
- a writer who is perpetually ignored by critics
- in a way that lasts forever
永久地：永久地永久地成为 - Water provides cost-free energy for generating electricity that is perpetually renewable.
水为发电提供了免费的能源，并且是永久可再生的。
- Water provides cost-free energy for generating electricity that is perpetually renewable.