O level

o-level的词性：
n.Chiefly British （名词）【多用于英国】

1. The earlier of two standardized tests in a secondary school subject.
普通考试：中学科目的两次标准化考试的前一次

2. The educational background and skills required to pass this test.
普通水平，普通程度：通过这次考试所需的受教育状况和技巧

o-level的词源：

3. O(rdinary) level
O(rdinary) level