尼姆想对着这几个人叫喊，想抗辩，可是他发不出声音来。
Nim wanted to shout at the others, to argue and plead, but his voice wouldn't work.
吹高音符的气流要比低音符强，不然吹出的音符声音很小，有时甚至发不出声响。
The air flow on high notes is much stronger than that of low notes, or it would sound very low or nothing on high notes.
吹高音符的气流要比低音符强，不然吹出的音符声音很小，有时甚至发不出声响。
The air flow on high notes is much stronger than that of low notes, or it would sound very low or nothing on high notes.
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