We use this of a person or company whose work is done on the Internet, or whose whole business is the Internet. The name comes from the ending of many website addresses: a little dot, then “com” (short for commercial).

We use this of a person or company我們會用這個字形容一個人或公司，whose work is done on the Internet工作是在網路上完成的，or whose whole business is the Internet或整個事業就是網路。The name comes from the ending of many website addresses這個名字來自很多網站地址的結尾：a little dot, then “com” (short for commercial)一個小點，然後是“com”（commercial的縮寫）。

A “dot-com company” sells online, runs a website as its shop, or lives on the web in some other way. People also shorten it to “a dot-com”, meaning the company itself.

A “dot-com company”一間“dot-com company” sells online在網路上賣東西，runs a website as its shop把網站當作自己的店，or lives on the web in some other way或用其他方式活在網路上。People also shorten it to “a dot-com”大家也會簡稱它“a dot-com”，meaning the company itself指這家公司本身。

Around the year 2000 a great many of these companies grew very fast and then a lot of them fell apart; newspapers still call that time the dot-com boom or the dot-com bubble. The word can describe the company, the years, or just the idea that the business is online.

Around the year 2000大約在2000年前後，a great many of these companies grew very fast有非常多這類公司快速成長，and then a lot of them fell apart然後很多又垮掉了；newspapers still call that time the dot-com boom or the dot-com bubble報紙現在還是把那段時間稱為dot-com boom（網路熱潮）或dot-com bubble（網路泡沫）。The word can describe the company, the years, or just the idea that the business is online這個字可以指這家公司、那段年代、或單純指「這門生意是在網路上」這個概念。

It is a little old now: younger people often say “tech company” or “online business”, though actually older speakers and business pages still like “dot-com”. It is everyday business talk, not school-formal, and it does not mean every firm that happens to have a website.

It is a little old now這個字現在有點過時了：younger people often say “tech company” or “online business”年輕人比較常說“tech company”或“online business”，though actually older speakers and business pages still like “dot-com”不過年紀較大的人和商業媒體還是喜歡用“dot-com”。It is everyday business talk, not school-formal這是日常商業用語，不是課本正式用語，and it does not mean every firm that happens to have a website而且不是指「只要有網站的公司」都算。