词汇	black and white step
释义	black and white step 黑白阶跃
随便看	social controls Social Controls social-controls Social Controls,Informal social control system social control theory Social control was generally effective social corporate responsibility social correction social correlate social correlative relation social correspondence social critical function social cultural factors social-cultural factors social convention social conventional appellation social conventional education social-conventional rule social conventions social conventions of language use social converting phase social cooperation social cooperation mechanism Social Coordinate