Ssf
abbr. saybolt seconds furol 赛波特弗洛（粘度计）秒数; single-seated fighter 单坐战斗机; standard saybolt furol (viscosity) 标准赛波特糠醛（黏滞性）
🗣️ 情景例句
It's nice to meet you.
很高兴见到你。
Don't tell anyone that I did it.
别说是我做的。
I'm afraid I don't understand.
恐怕我还不明白您的意思。