Here's a victory flag to wave over our lives, a motto to write on our hearts, a verse to nestle in our memory for instant recall when the winds blow and the windows rattle in the storms of life.
我们当将这经节深深刻印在脑海中，把它当座右铭深印心中，当我们落在人生的暴风雨中，疾风劲吹，窗儿戛戛作响时—— 便可将这面旌旗舞动起来。
In dynamic state all the medium parameters are complex functions verse frequency, and wave expression is also a complex function verse frequency.
在动态情形下所有的介质参数都是依赖于频率的复函数，波也用频率的复函数表示。
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