primer
primer 英 ['praɪmə] 美 ['praɪmɚ]
n. 初级读本；识字课本；原始物
名词复数:primers
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- n. 初级读本；识字课本；原始物
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1. The President doesn't need a primer on national security.
总统对于国家安全是不需要读入门书的。
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2. The English channel offers a useful primer.
这个英语频道为我们提供了有益启示.
- primer (n.1) late 14c., "prayer-book," also "school book" (senses not distinguished in Middle Ages, as reading was taught from prayer books), from Medieval Latin primarius, from Latin primus "first" (see prime (adj.)). The word also might be all or in part from prime (n.) on the same notion as a "Book of Hours." Meaning "small introductory book on any topic" is from 1807.
- primer (n.2) "explosive cap," 1819, agent noun from prime (v.).
- primer (n.3) "first layer of dye or paint," 1680s, from prime (v.).
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