warbles
v．颤声歌唱：以颤抖的声音唱歌。
n．颤声歌唱：颤抖的声音唱歌的行为。
例句
The merry lark warbles in the forest.
那只快乐的百灵鸟在树林里鸣叫。
Within 24 hours of returning to work, I had a problem, " she warbles ."
“在24小时内返回工作岗位时，我有一个问题，”她。
"Inflation or deflation," he warbles, "tell me if you can: will we become Zimbabwe or will we be Japan?"
通货膨胀还是通货紧缩，谁能告诉我，我们会重蹈津巴布韦和日本的覆辙吗？
