slow shutter speed, 慢速快門

Runner-up. “This flurry of motion is a midnight Easter procession in Zakynthos Town, on the Ionian island of Zakynthos, Greece. The congregations of various churches return to their homes carrying candles”. PAUL GOLDSTEIN, JUDGE: “This has terrific energy, is a gorgeous taupe colour and the slow shutter speed is masterly. This technique is often abused but works beautifully with the candles and the one face sharp in the melee. An accomplished image”. (Photo by Dominic Vacher/GuardianWitness)
Guardian Readers' Travel Photography Competition: April 2017 

Shutter speed - Wikipedia

快門速度