Bandwidth is how much information can travel through a telephone wire, a radio channel, or a computer connection at one time. A fat pipe has more bandwidth; a thin one has less, so a film keeps pausing.

Bandwidthbandwidth is how much information can travel through a telephone wire, a radio channel, or a computer connection at one time是指同一時間能有多少資料通過電話線、無線電頻道，或電腦連線. A fat pipe管線粗一點 has more bandwidth頻寬就比較大; a thin one管線細一點 has less頻寬就比較小, so a film keeps pausing所以影片才會一直卡

In technical talk it starts as the width of a band of frequencies — how wide a slice of the radio spectrum you are using — and from there it became the everyday word for “how much data can this connection carry.” People now stretch it further, especially at work: “I don’t have the bandwidth” can mean “I don’t have enough time or mental energy for that.” That second use is informal office English; it is the same picture as a full wire that cannot take more traffic.

In technical talk在技術用語裡, it starts as the width of a band of frequencies它原本是指一段頻率的寬度 — how wide a slice of the radio spectrum you are using你用的那一段無線電頻譜有多寬 — and from there之後 it became the everyday word for它變成日常用來說「how much data can this connection carry.」「這條連線能載多少資料」的字. People now stretch it further現在大家把它用得更廣, especially at work尤其是在職場上:「I don't have the bandwidth」「I don't have the bandwidth」 can mean可以指「I don't have enough time or mental energy for that.」「我沒有足夠的時間或心力做那件事」. That second use第二種用法 is informal office English是很口語的辦公室英文; it is the same picture as a full wire that cannot take more traffic畫面跟一條已經滿載、裝不下更多流量的線一樣

Broadband is related in feel but names a kind of fast connection, not the amount itself.

Broadbandbroadband is related in feel感覺上跟這個字有關 but names a kind of fast connection但指的是一種快速的連線本身, not the amount itself而不是「量」這件事