单词学习：rainbow 名词
rainbow
/ˈreɪnbəʊ/
彩虹；五彩缤纷的排列；幻想
After the rain, Mr. Gu pointed at the beautiful rainbow in the sky and explained the science behind it to his students.
雨后，顾老师指着天空中美丽的彩虹，向学生们解释了其背后的科学原理。
单词卡片
卡片已就绪
