世界问候日

摘要：

Nov. 21 is World Hello Day. It began back in the 1970s as part of an effort to make the world more peaceful. It was created just after the war between Israel and Egypt in 1973. The meaning be-hind it is to say ”Hello”and stop war.

在线出版日期：2020-07-31（万方平台首次上网日期，不代表论文的发表时间）

页数：共2页

页码：23-24