点击下方单词,选择对的这个单词
点击下面链接下载与本句相关的学习资源，包括PDF教材和音频练习，方便课后复习：
1. a gambling game using cards the object is to hold cards having a higher count than those dealt to the banker up to but not exceeding 21
Synonym: blackjackvingt-et-un
2. the cardinal number that is the sum of twenty and one
Synonym: 21XXI
多通过句子记忆单词，而不是单独死记硬背。
