The agent in this case can play a low sound while voltage is within correct parameters and a high-pitched sound when a problem occurs.
在这种情况下，代理可以在电压正常时发出低沉的声音，而在出现问题是发出高亢的声音。
Some animals' voices are high-pitched, others are low.
一些动物的叫声很尖锐，别的很低沉。
There's the low growl, the more intense medium growl, and the high-pitched screech.
这些人声包括低吼，更有力的中音咆哮，还有尖利的高音。
Supposedly, men lose their ability to hear high-pitched sounds and women lose hearing in the low end.
理论上男人会丧失听高音的能力，而女人会丧失低音听力。
No one knows how the brain tells the distinction among high pitched and low pitched sounds or among noisy and supple sounds.
没人知道大脑如何分辨高音低音还有喧闹和轻柔之音。
These sounds may be loud or quiet, clear or muffled, high or low pitched, pleasant or unpleasant in tonality.
这些声音可能大声可能小声、可能清脆可能较闷、可能高亢可能低沉、可能悦耳可能难听。
Blades are turned, or pitched, out of the wind to control the rotor speed and keep the rotor from turning in winds that are too high or too low to produce electricity.
叶片打开，或定，出于对风的控制转子的速度和保持转子从转折，在风是太高或太低，以产生电力。
No one knows how the brain tells the distinction among high pitched and low pitched sounds or among noisy and supple 2 sounds.
没人知道大脑如何分辨高音低音还有喧闹和轻柔之音。
It was a queer sound, ranging from low moaning to high-pitched crying.
那是一种奇异的声音，有的是低沉的哀鸣，有的是高声的尖叫。
High and low voice "Can you explain to me what the difference is between a high-pitched and low-pitched voice?"
高音和低音“你能解释一下高音和低音的区别吗？”
High and low voice "Can you explain to me what the difference is between a high-pitched and low-pitched voice?"
高音和低音“你能解释一下高音和低音的区别吗？”
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