primer

初级读本,原始物英释中释na school book that contains very basic facts about a subject

1 epoxy primer,n. 环氧底漆

2 shop primer,预涂底漆；临时防锈底漆

3 primer coating,涂底剂；初级涂烘

1 ...the language used in reading primers.....初级读物中使用的语言。