砲，以及用砲一直打
這一族是最原始的形狀：真的有一台會轟隆作響的機器，真的有東西飛出去，而且一發接一發打在同一個地方。
verb · B2
To attack a place with heavy guns, bombs or shells, firing at it again and again over a long period of time.
砲轟；連續轟擊
核心畫面
One target, standing still, and a great many things sent at it from a distance, one after another after another. Nobody walks up close. The things keep arriving, and what makes it bombarding is not the first one but the fact that it does not stop.
bombard 的核心畫面可以想成：一個目標站在那裡不動，而東西從遠處一波一波送過去。射的人不靠近，只是不停地送。讓…更多收起
bombard 的核心畫面可以想成：一個目標站在那裡不動，而東西從遠處一波一波送過去。射的人不靠近，只是不停地送。讓它成為 bombard 的，不是第一發，而是「後面還有、而且停不下來」這件事。這個畫面可以是砲彈，可以是訊息，也可以是實驗室裡看不見的小粒子——形狀都一樣：遠距離、大量、連續、落在同一個點上。From the word’s history
Latin bombus meant a booming, buzzing sound. Middle French bombarde named a medieval siege cannon after the noise it made, and French bombarder meant to fire one. English took both the machine and the action.
拉丁文 bombus 指轟隆、嗡嗡的低沉聲響。中世紀法文的 bombarde 就用這個巨響來命名一種攻城大砲，動詞 bombarder 則是「用它開火」。英文把機器和動作一起借了過來，所以今天名詞 bombard 是那台砲，動詞 bombard 是那個一直打的動作。
Wiktionary (kaikki extract) etymology for bombard noun (etymology 1) and verb (etymology 2), source_ref kaikki:3f6f69a190036ae4:124989313:12796 / :125002109:14237
Three branches
訊息與問題的轟炸
同一個畫面，飛過來的東西換成看不見的：問題、訊息、廣告、批評。位置沒變——你還是站在目標的位置上。
verb · B2
To send someone so many questions, messages, criticisms or so much information, one after another, that it is hard for them to deal with it all.
疲勞轟炸；接連不斷地丟過來
實驗室裡的粒子轟擊
還是同一個畫面，只是縮到看不見的尺度：送過去的是極小又極快的粒子，目標是一小片材料。
verb · C1
In science, to aim a steady stream of very small fast-moving particles at a material, so that they hit it.
（以粒子）轟擊