同义词是，contingency，occasionality，fortuity，chance。中文意思是n.偶然性， 意外发现美好事物的运气，机缘巧合
The word "serendipity" was coined by Horace Walpole in an 1854 letter， from a tale of three princes who "were always making discoveries， by accident， of things they were not in search of".
