Rff
abbr. remote fiber fluorimetry 远距离光纤荧光测定法
🗣️ 情景例句
I understand
听说，
Happy is he who knows his follies in his youth.
记得青年时所做的愚笨事的人是幸福的。
What a good, kind girl!
多美丽、善良的姑娘！