Optical indices
[医] 光学指数
🧩 词语组成解析
pl. 索引, 指针, 指数, 指标
🗣️ 情景例句
They're open until nine o'clock.
他们开到九点。
Practice is better than precept.
身教胜于言教。
But how did you get here?
不过你是怎么来的？