Definition
To undergo alternating periods of increase and decrease in strength or importance.
歸枯
The band's popularity has waxed and waned; sometimes they are very popular, and other times they are relatively unknown.
这个乐团的知名度起起落落；有时候他们非常受欢迎，有时候却相对默默无闻。
The tourism industry in this small town waxes and wanes with the changing seasons.
这个小镇的旅游业随着季节的变化而兴衰。
His enthusiasm for the project has waxed and waned, which has been frustrating for the rest of the team.
他对这个项目的热情时高时低，这让团队的其他成员感到沮丧。