1.
The tonic pitch is played as a drone that runs throughout the performance.
主音音高作为一种低沉底音（低音调）奏出，在整个演奏中贯穿始终。
2.
To talk, often excitedly, in low tones.
低声谈通常是兴奋地用低音调谈话
3.
Nick: Why don't we just turn the bass down?
尼克：我们把低音调低了不就行了吗？
4.
A tone of low pitch or volume, especially of spoken sound.
低音；低声低强度或音量的音调，尤指说话声音
5.
An instrument, especially a double bass, that produces tones in a low register.
低音乐器特别是低音提琴，产生出音域低的音调
6.
A low - pitched sound or tone.
低音低沉音质的，深沉音调的
7.
(music) lowered in pitch by one chromatic semitone.
（音乐）在音调上降低半音的。
8.
The lowest part in vocal or instrumental part music.
低音部分音调或乐器的部分音阶中最低的部分
9.
His voice was low and not pleasant.
他的音调低沉而不愉快。
10.
make a monotonous low dull sound.
做出单调的低沉的声音。
11.
To sing or play below the proper pitch.
低于正常音调唱或弹奏
12.
The music was too slow and the food lousy
音乐低调，食物太差。
13.
pitched an octave below normal bass instrumental or vocal range.
声调比一般低音乐器或者低音域低一个八度。
14.
Tone that radio down,please.
请把那台收音机的音量调低些。
15.
I wish to God he'd turn that radio down!
我真希望他把收音机的音量调低些!
16.
The tones in the lowest register of an instrument.
乐器中最低音域部分的音调
17.
Please oblige me by turning down the radio.
劳您驾,请替我把收音机音量调低一些。
18.
The monotonic drone bass of a bagpipe.
风琴低音一种由风琴发出的单调的低音