Related topics: School
O grade /ˈəʊ ɡreɪd $ ˈoʊ-/ noun [countableC, uncountableU] SESan examination in a particular subject which children take in schools in Scotland, usually at the age of 16 普通等级考试,O级考试〔苏格兰学校对某一特定科目的考试,考生年龄一般在16岁〕 → higher
→ O level