核心畫面

You can picture a wave swelling up all at once — it was flat a moment ago, and now it is high. The word always carries both parts: it went up, and it went up fast. What rises can be a number on a chart or a feeling in your chest.

可以想成一道浪突然湧起來。前一刻水面還是平的,下一刻就高了。這個字永遠帶著兩件事:往上,而且很快。慢慢爬上去的不算。更多收起可以想成一道浪突然湧起來。前一刻水面還是平的,下一刻就高了。這個字永遠帶著兩件事:往上,而且很快。慢慢爬上去的不算。至於湧上來的是什麼,可以是報表上的一個數字,也可以是胸口那股感覺。

From the word’s history

up- + surge: 'surge' is water swelling and rushing, and 'up-' points the movement upward.

up-(往上)加上 surge(水湧起、奔湧)。所以字面就是「往上湧的一股」,這張圖後來兩個意思都用得上。

Wiktionary entry for upsurge (packet etymology_text: 'From up- + surge.')

One branch

突然湧上來的一股

兩個意思共用同一道浪,差別只在湧起來的地方:一個在數字上,一個在人心裡。

noun · C1

A sudden, large rise in the number or amount of something.

激增