transient process characteristic curve

例句：

1. 1. The transientsun sets in the west.
   太阳在西边落下。
2. 2. The transient memory of childhood is unforgettable.
   童年的记忆是难忘的。
3. 3. Thetransient nature of life makesit difficult to plan for thefuture.
   生命的短暂使得我们难以为未来做计划。