同時開火
這一族就是核心畫面本身，而且同時保留了戰場和典禮兩種場合。
noun · C1
The firing of several guns at the same moment, either in a battle or as part of a ceremony such as a salute.
齊射／禮砲
核心畫面
Picture a row of guns along a ship's side. They do not go off one after another. Someone gives a signal and every one in the same instant, so what reaches you is a single enormous sound made of many. Then quiet, and everyone waiting to see what comes next. Many at once, in one moment, loud enough to change the air — that is a useful way to hold every use of salvo.
salvo 可以想成船側排開的一整排砲。它們不是一發一發放。有人一聲令下，全部在同一瞬間開火，傳到你耳朵裡的是一個由…更多收起
salvo 可以想成船側排開的一整排砲。它們不是一發一發放。有人一聲令下，全部在同一瞬間開火，傳到你耳朵裡的是一個由很多發合成的巨響。然後是安靜，大家等著看接下來會怎樣。很多、同時、大到空氣都在震——用這個畫面去看 salvo 的每一種用法，都對得上。From the word’s history
Wiktionary traces this salvo to Latin salve, hail, the ordinary Roman greeting, by way of salva, a salute or volley. Firing guns together began as a way of greeting and honouring someone, which is why the word still covers the ceremonial use as well as the battle one.
Wiktionary 說這個 salvo 來自拉丁文 salve（你好、平安），那是羅馬人見面的招呼語，中間經過 salva（致敬、齊放）。同時放砲本來就是一種問候和敬禮，所以這個字到今天還同時涵蓋典禮和戰場兩種場合。
Wiktionary entry for salvo, etymology 2, packet evidence source_ref kaikki:3f6f69a190036ae4:608300144 — from Latin salva 'salute, volley', from salve 'hail'.
Three branches
言語上的一波攻勢
砲口轉向對手，打出去的變成話和動作；仍然是一次一整批，而且仍然有兩個陣營。
noun · C2
A group of strong words or actions aimed all at once at someone you are arguing with or competing against, as one move in a longer fight.
一波攻勢／砲火
一起爆出來的聲音
同樣的巨響，發出來的換成一群人：笑聲、掌聲、歡呼在同一秒一起炸開。
noun · C2
A sudden burst of laughter, clapping or cheering that comes from many people at the same moment.
一陣（掌聲、笑聲）