transient tachometer

例句：

1. 1. The transient glowof the sun on the water is mesmerizing.
   太阳在水面上的短暂光芒令人着迷。
2. 2. The transient nature oflife makes it all the more precious.
   生命的短暂性质使得它更加宝贵。
3. 3. The transientmemories of childhood are a treasured partof our lives.
   童年的记忆是生活中珍贵的部分。