To utter a succession of light chirping or tremulous sounds; chirrup.

啁啾发出连续的轻的啁啾声或抖动的声音；

youdao

The theoretical research show that introduce of these factors will reduce the amplitude of nonlinear frequency chirping imposed on amplified light pulse.

理论研究表明，这些因素的引入将减小光放大器附加到放大光脉冲上的非线性频率啁啾。

youdao

As the Moon's disc began to leave the Sun, it was light again, and birds, which had flown to their nests only minutes earlier, came chirping out again.

BBC: Under the Moon's shadow