Cfs
abbr. 立方尺/秒（cubic feet per second）
🗣️ 情景例句
When you come out of the hospital.
在你病好出院后。
Step by step the ladder is ascended.
登梯需要逐级登。
from which can be seen the strata the drill has been cutting through.
从中能看出钻头所钻透的地层。