adj.经过调频的;
v.鸟鸣,用柔和的颤声唱( warble的过去式和过去分词 );
例句:
The canary warbled all day long.
那只金丝雀整天在鸣叫.
The telephone on his desk warbled.
他桌上的电话叮铃铃响了。
She warbled as she worked.
她边工作边用颤音唱歌。