Opticity
旋光性, 光偏振性
🗣️ 情景例句
Spring has sprung and all the flowers are blooming.
春天来了。花儿都开了。
Most of them are less than 30.
他们中大多数不到30岁。
A girl came in and put an envelope on his desk.
一个姑娘走了进来，把一个信封放在了他桌上。