wax and wane

漢語翻譯

例句：

1. His love for her waxed and waned through the year that they knew each other.
   在他們相識的那一年裡，他對她的愛一直時增時減。
2. Throughout history empires have waxed and waned.
   歷史上各個帝國革故鼎新均有興衰。