平稳时期 meaning in Chinese

flation

As a rule , one makes rapid progress at the beginning and then it reaches a plateau
通常,一个人开始的时候进步神速,以后就进入平稳时期
But mister greenspan thought inflation could remain low because of increased productivity . he was right . the economy had one of its longest expansions ever in peacetime
但是格林斯潘先生认为通货膨胀可得以保持较低水平是因为有不断提升的生产力。事实证明他是正确的。经济在曾经的一段平稳时期中，有了最广泛的延展。