长鸣

chángmíng

长鸣 — chángmíng

to sound continuously; to keep ringing or wailing for a long time
警报长鸣，提醒大家立即疏散。 jǐngbào chángmíng tíxǐng dàjiā lìjí shūsàn — The alarm kept sounding to warn everyone to evacuate immediately.