(wēng) onomat. buzz; hum; drone
(wēngwēng) buzz; drone; hum
(wēngwēngjiào) hum; drone; buzz (of insects)
(wēngwēngdàn) buzzing bomb
(wēngwēngzǔlā) vuvuzela (horn blown by sports fans)
(wēngwēngshēng) hum; drone; buzz