or·di·nar·y lev·el
noun/ˈɔːdnri levl/
/ˈɔːrdneri levl/
(also O level)
[countable, uncountable]- (in England and Wales in the past) an exam in a particular subject, at a lower level than A level, usually taken at the age of 16. In 1988 it was replaced by the GCSE.
普通证书考试（过去英格兰、威尔士对某科目的考试，低于高级证书考试，通常在 16 岁时参加。1988 年被普通中等教育证书 (GCSE) 取代）