When you hear the fire alarm, which is a very loud, continuous ringing noise, you should go to the nearest fire exit or fire escape as quickly as possible.
当你听到非常大的火警的声音、连续的振铃的时候，尽快地跑到最近的安全出口或者安全梯。
Whispering gallery modes in silica microspheres are excited by a tunable continuous-wave laser through the fiber taper. Ringing phenomenon can be observed with high frequency sweeping speed.
我们利用连续可调谐激光激发了二氧化硅微球腔内的回廊耳语模式，并观察到了微球腔内的振铃现象。
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