vi.

1. （鸟等）吱吱叫，啁啾
   The birds were hopping about on their perches and twittering.

   鸟儿在栖木上跳来跳去，吱吱地叫着。

2. 唧唧喳喳地讲话[（+on/away）]
3. 格格地笑
4. （因激动等）颤抖；紧张

vt.

1. （鸟等）吱吱叫，啁啾地唱出
2. 唧唧喳喳地讲述

n.

1. （鸟等的）吱吱叫，啁啾声[U][the S]
2. 唧唧喳喳声；格格的笑声[C]
3. （因激动引起的）颤抖，紧张[S]

v.

1. (of a bird) make a series of light tremulous sounds.
2. talk rapidly in a nervous or trivial way.

n.

1. a twittering sound.
2. trivial talk.