官方的人口生命數字
最正式的一層，也是這個詞最主要的用法：被壓縮的對象是一整個群體。
noun · C1
Official numbers that record the main life events in a population: how many people are born, how many die, how many marry, and so on.
人口統計數字
核心畫面
You can think of vital as a very short list of numbers that sums something up. Not all the numbers — just the few that tell you what state the thing is in. For a country that list is births, deaths and marriages. For a car or a phone it is size, weight and power. The shape is always the same: a whole subject squeezed into a handful of figures.
vital statistics 可以想成一份很短的數字清單，用來把一件事一次講完。不是全部的數字，只有最關鍵的那幾…更多收起
vital statistics 可以想成一份很短的數字清單，用來把一件事一次講完。不是全部的數字，只有最關鍵的那幾個。對一個國家來說，那幾個數字是出生、死亡、結婚。對一台車或一支手機來說，就是尺寸、重量、性能。形狀始終一樣：把一個龐大的對象，壓縮成手指數得完的幾個數字。認這個詞的時候，先看那幾個數字在量什麼，就知道是哪一種用法。Two branches
口語：把對象壓成幾個數字
同樣是「幾個數字講完一件事」，但被量的不再是人口的生死，而是東西或身體的尺寸，語氣也變得輕鬆。
noun · B2
The few key facts and numbers that describe something, especially how big it is — the short list you see next to a car, a building, or a new phone.
關鍵數據；規格