Sfm
abbr. surface feed per minute 表面/分钟流量; surface feet per minute 每分钟英尺表面线速度数，英尺/分表速
🗣️ 情景例句
I don't know how to thank you enought.
我不知道应该如何感谢你。
If I can't go with you, what is your reaction?
如果我不能和你一起去，你会作何反应？
They can have only five guesses.
他们只能猜五次。