Word forms: plural, 3rd person singular present tense, 3rd person singular present tense warbles, present participle warbling, past tense, past participle warbled
1VERB (鸟)啭鸣,啁啾 When a bird warbles, it sings pleasantly. (鸟)啭鸣,啁啾
The bird continued to warble. [VERB]
鸟儿继续啁啾。
A flock of birds was already warbling a cheerful morning chorus. [VERB noun]