其他
「世界微笑日」今天你微笑了吗
The World Smile Day
世界微笑日是由世界精神卫生组织在1948年确立的唯一一个庆祝人类行为表情的节日，日期为每年的5月8日。还有另一种说法是，每年10月的第一个星期五。
World Smile Day is celebrated on the first Friday in the month of October every year. The idea of World Smile Day was coined and initiated by Harvey Ball, a commercial artist from Worcester, Massachusetts. Harvey Ball is known to have created the Smiley Face in 1963.
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