This is no time to be striking off in bold new directions.
现在没有时间向大胆的新方向努力。
The fire gradually got bigger and bigger. Sparks flew off in all directions.
火势逐渐变得越来越大。火花四处飞溅。
Basically, the phenomenon of Standing Waves occurs when sound waves of the same frequency reflect off the walls and meet from opposite directions.
基本上,当相同频率的声波从墙壁上反射并从相反方向相遇,就会出现驻波现象。
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