Definition
Describing something that exists only for a short period and quickly disappears.
曇花一现
This newly opened restaurant was really here today, gone tomorrow; it closed down after only a few months.
这家新开的餐厅真是来去匆匆，只开了几个月就关门了。
Many viral videos are here today, gone tomorrow; they are quickly forgotten by everyone.
许多病毒式传播的视频都是来去匆匆，很快就被大家遗忘了。
Fashion trends always come and go; many items are here today, gone tomorrow.
时尚潮流总是来去匆匆，许多单品都是昙花一现。