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
Canada has the most beautiful waterfalls in the world.
加拿大有世界上最壮观的瀑布。
Two in distress makes sorrow less.
同病相怜。
He will do anything but work.
只要不是干活，他干什么都行。