v.用颤音唱；鸟鸣
n.颤音；动物背上的肿块
A blackbird was warbling from the branch. 一只画眉鸟在枝头歌唱。
用作名词 (n.)I heard the faint warble of Laura's voice. 我听到劳拉那柔和的颤音。
The strain was solemn and affecting, sustained as it was by the pathetic warble of a voice. 曲子既庄严又感人，是由悲怆的颤音唱出来的。
