1.
Her voice sank to a whisper.
她把声音降低到了耳语。
2.
He sank his voice to a whisper.
他把声音降低到耳语。
3.
Please keep your voice down while the Baby is sleeping.
当婴儿睡觉时请你把声音降低。
4.
Sink your voice to a whisper.
把你的声音降低到耳语。
5.
To lower(a note)a semitone.
降半音把（音符）降低半音
6.
Turn the radio up a little. It's too low.
把收音机开响一点，声音太低了。
7.
When talking in front of our elders, we should lower our voice.
在长官或长辈面前，说话的声音要降低。
8.
end a sentence with a cadence
以降低的声音结束一个句子
9.
Turn that record-player down I'm trying to get some sleep.
把电唱机的声音调低些--我想睡一会儿.
10.
harmonize a melody
把 (低音的) 和声加于旋律中
11.
B flat is a semitone below the note B.
降B音比B音低半音.
12.
We distinguish sounds into high and low, soft and harsh, lively and grave
我们把声音分成高与低、柔和与刺耳、轻快与低沉。
13.
To enjoy high-quality sound, do not turn the subwoofer volume too high.
要获得高音质音响时，不要把副低音扬声器的音量高得太高。
14.
A falling inflection of the voice, as at the end of a sentence.
声音降落，降句调发音时下降的音调
15.
the sonority of the bass voices
男低音部的低沉声音.
16.
The baby is sleeping, so they fall their voice to a whisper.
那婴儿在睡觉, 所以他们把声音降成耳语。
17.
The most direct method of noise control is the reduction of the noise at its source.
控制噪音最直接的方法就是在噪音源处降低噪声。
18.
Increase or decreases the volume of the sounds associated with system events such as incoming e-mail.
提高或降低跟系统事件(如传入电子邮件)有关的声音音量。