VERB (鸟)啭鸣,唧啾 If a bird trills, it sings with short, high-pitched, repeated notes.
At one point a bird trilled in the Conservatory. 有那么一刻,一只鸟儿在温室里啼叫。
VERB 尖声地说(或笑) If you say that a woman trills, you mean that she talks or laughs in a high-pitched voice which sounds rather musical but which also sounds rather irritating.
'How adorable!' she trills. “真可爱!”她尖声说。
颤音 A trill is the playing of two musical notes repeatedly and quickly one after the other.