克罗斯比最先了解到，麦克风能使他在一间小屋里对着一个人歌唱的效果，等价于在大厅广众中对着许许多多人歌唱。
Crosby was among the first to understand that the microphone made it possible to sing to multitudes by singing to a single person in a small room.
在道德风险问题的委托代理关系中，委托人对代理人行动的监督与对自然状态的观测所起的效果是等价的。
In the principle-agent problem with moral hazard, the observation of the state of nature has the same effect with the monitoring of agent's action.
将声门闭合在语音信号中表现出相应的奇异性，与图像边缘的灰阶突变进行等价对比，直接将小波变换用于声门闭合奇异型的检测，并不会得到预期效果。
If the wavelet transform is directly implemented in pitch detection, comparing the glottal closure singularity of speech signal with image grey break, we will not obtain the anticipative result.
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