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
Don't worry about it. It's nothing.
别担心，没事儿。
Every family has problems.
家家有本难念的经。
It's a car.
是一辆车。