Hints: 本期学习的字源：pri, prim, prin=frist第一，最初 slash-and-burn Sumatra 单词不需要大写，单词与例句或不同词条之间换行即可。 注解中详细介绍了单词的拆分与释义，是学习字源分析的重中之重！一定记得听写后来看注解！
prince priority Airport security takes priority over all others. primary The three primary colors are red, yellow and blue. primate Humans, like monkeys, are members of the primate family. prime A pianist in his sixties is still in his prime, but a vocalist at such an age would be past his prime. primeval The primeval forest is now endangered by slash-and-burn farming. primitive Some natives in Sumatra are still living a relatively primitive life.
Airport security takes priority over all others. 机场安全优先于其他考量。 The three primary colors are red, yellow and blue. 三原色指的是红色、黄色和蓝色。 Humans, like monkeys, are members of the primate family. 人类和猴子一样是灵长类的一员。 A pianist in his sixties is still in his prime, but a vocalist at such an age would be past his prime. 钢琴家到了60岁还能处于最佳状态，但声乐家到了这种年纪就已经过了最佳状态。 The primeval forest is now endangered by slash-and-burn farming. 原始森林目前受到滥砍焚烧式开垦的威胁。 Some natives in Sumatra are still living a relatively primitive life. 苏门答腊岛有些原住民还过着相对原始的生活。