长音的英文：
dah
参考例句：
Long tones in the low register, with your best tone and keeping the sound at mezzo-forte level.
低音区长音，用你能够达到的最好的'音准，用中强力度。
Using a long-drawn-out series of slow notes and giving full play to the versatility of the performers.
渐次逐一拉长一串长音，充分表现了演奏者的气息偷换技巧。
Macron: Short line over a vowel or syllable to indicate that the accent is long. See Accents.
长音符号:在母音或章节之上的短划，表示长音。参阅音标。
The phone jangled its two longs, one short for Drogheda.
电话铃响了二次长音，一次短音，是打给德洛耶达的。
dah是什么意思：
n. 大刀,长划
