Spf
abbr. 防晒系数（Sun Protect Factor）；存储保护特征（Storage Protect Feature）
🏥 医学释义
荧光分光光度计
🗣️ 情景例句
I'd like to give thanks for Grandpa coming to live with us.
我感谢爷爷到这儿和我们一起生活。
Don't cry out before you are hurt.
还没受苦，就别叫苦。
It was the last day of the year and a large crowd of people had gathered under the Town Hall clock.
那是一年的最后一天，一大群人聚集在市政厅的大钟下面。