stationary
adjective uk/ˈsteɪ.ʃən.ər.i/ us/ˈsteɪ.ʃə.ner.i/
静止的；不变的；稳定的
not moving, or not changing
a stationary car/train 停着的汽车／火车
The traffic got slower and slower until it was stationary. 车流移动得越来越慢，最后完全不动了。
The rate of inflation has been stationary for several months. 通货膨胀率已经几个月保持不变。