B2B means business-to-business: work, sales, or websites that go from one company to another company, not to ordinary shoppers. A factory that sells steel to a car maker is B2B. A shop that sells shoes to you is not; that is B2C, business-to-consumer.

B2B B2B means意思是 business-to-business企業對企業: work, sales, or websites工作、銷售，或網站 that go from one company to another company從一家公司到另一家公司的, not to ordinary shoppers而不是賣給一般消費者的。A factory一間工廠 that sells steel賣鋼鐵 to a car maker給汽車廠商 is就是 B2B B2B。A shop一間商店 that sells shoes賣鞋子 to you給你 is not就不是B2B; that那 is是 B2C, business-to-consumer企業對消費者的B2C。

The 2 is a playful way to write “to,” because it sounds the same.

The 2這個2 is a playful way用一種俏皮的方式 to write “to”寫「to」這個字 because it sounds the same因為聽起來一樣。

The word became common in the 1990s, when companies started doing this work on the internet. It is office and news English, a little jargony. People use it as an adjective (a B2B company, B2B software) more than as a noun.

The word這個字 became common變得常見 in the 1990s在1990年代 when companies started doing this work那時候公司開始做這種生意 on the internet在網路上。It它是 is office and news English辦公室和新聞裡常用的英文 a little jargony帶點行話味。People人們 use it as an adjective更常把它當形容詞用 (a B2B company一間B2B公司, B2B softwareB2B軟體) more than as a noun而不是當名詞用。

Though actually, many firms do both, so the label is tidier than real life.

Though actually不過其實, many firms很多公司 do both兩種生意都做 so the label所以這個標籤 is tidier than real life比現實整齊。