单词：warblings
(warbling 的复数) v. 鸟鸣, 用柔和的颤声唱( warble的现在分词 )
plural of warbling
v sing or play with trills, alternating with the half note above or below
v sing by changing register; sing by yodeling
v sing or play with trills, alternating with the half note above or below
v sing by changing register; sing by yodeling