(pos:名詞)
<explanation>
yue:聲音嘅速度
eng:the speed of sound
<eg>
yue:#超音速 (ciu1 jam1 cuk1)
eng:supersonic
<eg>
yue:通常喺空氣入面，音速係每秒343.2米。 (tung1 soeng4 hai2 hung1 hei3 jap6 min6, jam1 cuk1 hai6 mui5 miu5 saam1 baak3 sei3 sap6 saam1 dim2 ji6 mai5.)
eng:Generally, the speed of sound in air is 343.2 m/s.
