s. lasting for a markedly brief time
a. 疾驰的, 短暂的, 飞逝的
1. The beauty of a sunset is fleeting, so enjoy it while you can.
日落的美丽是短暂的，所以趁现在好好享受吧。
2. She had a fleeting thought about moving to another city.
她短暂地想到了搬到另一个城市。
3. Memories can be fleeting, but they are often the most precious.
回忆可能是短暂的，但它们往往是最珍贵的。