单词	raison d'être
释义	raison d'êtrerai‧son d'être /ˌreɪzɒn ˈdetrə $ -zoʊn-/ noun [singular] Word Origin WORD ORIGINraison d'être Origin: 1800-1900 French ‘reason of being’ the reason why something exists, why someone does something etc:  Commerce was the town’s raison d'être.
随便看	Sino- sinuous sinuously sinus sinusitis Sioux sip siphon sipping lid sir sire siren Sir Gawain and the Green Knight Sirhan Sirhan Sir Humphrey sirloin sirocco sis sisal Sissinghurst sissy sister sisterhood sister-in-law sisterly

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