Refringency
折射系数
🗣️ 情景例句
Frank, you've never played charades?
Frank，你从来没玩过哑谜？
Have you ever thought about becoming a professional musician?
你曾经考虑了成为一个职业的音乐家吗？
Happy birthday! said the twins, and gave her a big red box.
“生日快乐！”双胞姐妹说，并将一个大红盒子送给了她。