Tautorotation
变旋(光), 变异偏振
🗣️ 情景例句
Hobbies are supposed to be relaxing.
业余爱好应该是令人放松的。
It is lost labour to sow where there is no soil.
没有土壤，播种也是徒劳。
It's seven fifteen.
七点十五了。