Invert elevation
[化] 管内底标高
🧩 词语组成解析
elevation
[,ɛlɪ'veʃən]
n. 高处，高地，高度，海拔，（枪炮的）仰角，射角;升级，上进，向上;高尚;[建]正视图，立视图;
e出+lev提高,举起,变轻+ation名词后缀 → 提升，提高，高度
🗣️ 情景例句
Be on your guard.
你要提防着点儿。
Who wrote that song?
那支歌曲谁写的？
but we were afraid that the strength of the current would prevent its landing anywhere before it became exhausted.
但我们担心，洪水力量将使它上岸之前就筋疲力尽了。