People observe a minute of silence, 人們默哀一分鐘

People observe a minute of silence at the Place de la Bourse in the center of Brussels, Wednesday, March 23, 2016. Bombs exploded yesterday at the Brussels airport and one of the city's metro stations Tuesday, killing and wounding scores of people, as a European capital was again locked down amid heightened security threats. (AP Photo/Martin Meissner)
The world reacts to Brussels attacks
http://news.yahoo.com/photos/the-world-reacts-to-brussels-attacks-slideshow/the-world-reacts-to-brussels-attacks-photo-1458757680617.html