level-headed ['levl 'hedɪd]

以下由轻松背单词网站提供

附加级

a.sensible;restrained in judgments

For this course, you need two GCE Advanced Level passes. 要学这个学程，就须要通过普通教育证书两门学科的高级证书考试。
to gain a high level of competence in English 获得高水平的英语能力