1.They quickly spread in popularity and now more than six billion of them are sent every day around the world.
in popularity受欢迎的
Walking and golf increased in popularity during the 1980s.
在20世纪80年代越来越多的人喜欢上了远足或是打高尔夫球
。2.Some of this misunderstanding is related to how the reader or viewer interprets the emoji design.
is related to有关
Much of the violence is related to drugs and gang warfare.
大多数暴力事件都与吸毒和群殴有关
。