3用英文是three。英 [θri:] 美 [θri] 三;三个;第三（章，页等）n.三岁;三个人[东西];三，三个adj.三的;三个的There are examples of how to use numbers at the entry for five . 数词用法示例见five条。习语the three Rs(old-fashioned) 初等教育三要素（被视为儿童教育最重要部分的读、写、算） reading, writing and arithmetic , thought to be the most important parts of a child's educationin twos and threes三三两两；稀稀拉拉 two or three at a time; in small numbersPeople arrived in twos and threes.人们三三两两地到了。
绝妙蓝调
