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 sold it to the present owners.
是我把它卖给了现在的主人。
I am cought between the devil and the deep blue sea.
进退维谷。
for she had sixteen watertight compartments.
因为船由16个密封舱组成，