離地面很近（實際的高度）
這一支就是那把尺原本的樣子：量的是實際的高度。
adjective · B2
Happening close to the ground instead of high in the air. It is used most often about aircraft that fly very low, and about other things that stay near ground height.
低空的
核心畫面
Picture an upright ruler with the ground at the bottom and the sky at the top. Low-level means the thing sits near the bottom of that ruler. What the ruler measures changes with the situation: height above the ground, rank inside a company, how strong a feeling is, or how close a piece of code sits to the machine. Going down the ruler does not make something worse. It makes it lower, smaller, milder, or closer to the basic parts.
可以想成一把立起來的尺：底下是地面，上面是天空。low-level 指的就是東西停在這把尺的下端。至於尺量的是什麼，…更多收起
可以想成一把立起來的尺：底下是地面，上面是天空。low-level 指的就是東西停在這把尺的下端。至於尺量的是什麼，會隨場合換。可能是離地的高度。可能是公司裡的層級。可能是一種感覺的強度。也可能是程式離機器有多近。往下走，東西不是變差，而是變低、變淡、變細、變靠近底層。From the word’s history
The word is simply low + level. Level can mean a height, a layer, a rank, or a point on a scale, and that is why one word covers flying low, junior staff, mild pain and machine-near code.
這個字就是 low 加 level。level 可以是高度，可以是一層，可以是位階，也可以是刻度上的一個點。正因為 level 這麼廣，同一個 low-level 才同時蓋得住低飛、基層、輕微，還有貼近機器的那一層。
Wiktionary entry for low-level (kaikki:3f6f69a190036ae4:1225425639:5314): "From low + level."
Four branches
在組織裡的位置低
把那把尺從地面搬進公司裡。上面是能決定事情的人，下面是照著做的人。位置低，能決定的就少。
adjective · B2
Used about jobs, workers or meetings that sit near the bottom of an organization, where people carry out decisions rather than make the big ones.
基層的
強度低（感覺和數量）
這次尺量的不是高度，而是強度：痛不痛、吵不吵、多不多。指針停在下面，就是 low-level。
adjective · B2
Present at a small amount or weak strength instead of a strong one. Something low-level is really there and can be felt or measured, but it stays mild and sits in the background.
低程度的
靠近底層、看見細節
尺的下端在這裡變成「底層」。往下走不是變差，而是越靠近機器、越看得見每一個小動作。
adjective · C1
Used about computer code or a computer language that works very close to the machine itself, so that what you write matches, almost one for one, the small steps the machine carries out.
低階的