school busWiktionary 原文构词拆分school词根/词干+bus词根/词干词源说明Compound of school + bus.释义（英文）名词 Noun(automotive) A bus which carries children to or from school.(metrology, informal) An informal approximate unit of measure, from the length of a typical public school bus, approximately 30 feet or 9 metres.词族相关词（2）school bus yellowwalking school bus