把儀器弄準
核心畫面的兩個步驟：先把刻度做出來，之後定期回頭對一次。
verb · C1
To put the marks on a tool or instrument that show amounts, so that people can use it to measure things.
標上刻度
核心畫面
You can think of calibrate as the row of little marks up the side of a measuring . Somebody had to decide where each line went. Once the lines are there, the can be trusted — and every later use of the word is about keeping that trust: checking the lines against something known, or, with people, getting the amount exactly right.
calibrate 可以想成量杯側面那一排小刻度。那些線不是自己長出來的。有人得先決定每一條畫在哪裡。線畫好了，這個…更多收起
calibrate 可以想成量杯側面那一排小刻度。那些線不是自己長出來的。有人得先決定每一條畫在哪裡。線畫好了，這個杯子才值得相信。這個字後來的每一個用法，講的都是在維持那份「可以相信」。有時候是拿標準件回頭對一次，把跑掉的調回來。有時候根本沒有儀器，是一個人在拿捏自己說話的分寸。共同的地方是：動作不大，但一定要剛剛好。From the word’s history
From calibre + -ate. Calibre is the measured width inside a tube, so the word starts out tied to getting a size exactly right.
這個字來自 calibre 加上 -ate。calibre 本來指管子內部的口徑，也就是量出來的尺寸。所以 calibrate 從一開始就跟「把尺寸弄準」綁在一起，這也是它每個意思共有的重點。
Wiktionary etymology supplied in this packet (source_ref kaikki:3f6f69a190036ae4:758986146:18263): from calibre + -ate.
Two branches
把分寸抓準
把刻度的畫面搬到人身上：儀器調的是讀數，人調的是「多少」。
verb · C1
To adjust what you do or say by small amounts, so that it fits a situation exactly.
細微調整；拿捏