wax and wane
成語所屬單字wane
wax and wane — 慣用語
1. To become stronger and then weaker repeatedly over time.
1.慣用語
釋義
盈虧交替
To become stronger and then weaker repeatedly over time.
例句
The moon's brightness waxes and wanes during its monthly cycle.
Did the team's performance wax and wane throughout the season?