beep
n short high-pitched sound, as made by a car horn or by electronic equipment (汽车喇叭或电子设备所发出的)嘟嘟声, 哔哔声. beep, v [I]
make this sound 发嘟嘟声; 发哔哔声
The computer beeps regularly. 计算机发出有规律的哔哔声.
On our way home that night I looked down and saw that the necklace was not around my neck any more. I told Pierre. We rushed back to the palace and looked for it.We asked everyone there if they had found a necklace, but without luck. We couldn't find it;