嘟嘟声

lǎ ba de dū dū shēng

喇叭的嘟嘟声

the beep of a horn

diàn nǎo fā chū dū dū shēng yāo qiú jìn yī bù tí gōng xìn xī de zhǐ lìng

电脑发出嘟嘟声，要求进一步提供信息的指令。

The computer beeped, and flashed up a request for further information.