chirps

短促、尖利或高亢的鸣声,如鸟或昆虫发出的。

A short, sharp or high note or noise, as of a bird or insect.

小鸟或昆虫发出的尖锐声音

a sharp sound made by small birds or insects

在脉冲持续期间其频率扫掠过一段频带的信号脉冲；具有这种频率变化的特性。

A pulse of signal whose frequency sweeps through a band of frequencies for the duration of the pulse; the quality of having a such a variation in frequency.