A megabit is one million bits of computer data. A bit is the smallest piece of information a computer holds — a single yes-or-no, on-or-off. A million of those is a megabit, usually written Mb with a small b.

A megabit百萬位元 is one million bits of computer data是一百萬個電腦資料位元. A bit位元 is the smallest piece of information a computer holds是電腦所存的最小資訊單位 — a single yes-or-no, on-or-off就是單一個是非、開關. A million of those一百萬個位元 is a megabit就是一個百萬位元, usually written Mb with a small b通常寫成Mb，b是小寫.

This word matters most when you talk about SPEED, not storage. Internet plans are sold in megabits per second (Mbps): 100 Mbps, 300 Mbps, 1000 Mbps.

This word matters most這個詞最重要的用法 when you talk about SPEED是在講速度的時候, not storage而不是儲存容量. Internet plans are sold網路方案是用 in megabits per second (Mbps)每秒百萬位元(Mbps)來賣的: 100 Mbps, 300 Mbps, 1000 Mbps像100 Mbps、300 Mbps、1000 Mbps.

Almost nobody says 'I have 100 megabits' out loud in daily life; they say '100 mega' or read the number off the plan. Engineers and salespeople use the full word.

Almost nobody says幾乎沒有人會說 'I have 100 megabits'「我有100個megabit」 out loud in daily life在日常生活裡這樣講; they say他們會說 '100 mega'「100兆」 or read the number off the plan或直接照方案上的數字念. Engineers and salespeople工程師和業務員 use the full word才會用完整的詞.

Note that companies like the megabit exactly because the number looks big: 100 Mbps sounds much faster than the same speed written as 12.5 megabytes per second, which is what you would actually see when a file downloads. Strictly, a megabit is 1,000,000 bits — the bit side of computing usually keeps the round decimal million, unlike the megabyte, which people often treat as 1,024 kilobytes.

Note that companies like the megabit要注意公司喜歡用megabit exactly because the number looks big正是因為數字看起來比較大: 100 Mbps sounds much faster100 Mbps聽起來快很多 than the same speed written as 12.5 megabytes per second比起寫成每秒12.5megabyte的同樣速度, which is what you would actually see而那才是你下載檔案時 when a file downloads實際看到的數字. Strictly嚴格來說, a megabit一個megabit is 1,000,000 bits是1,000,000個位元 — the bit side of computing電腦裡位元這一邊 usually keeps the round decimal million通常都用整數的百萬, unlike the megabyte不像megabyte, which people often treat as 1,024 kilobytes人們常把它當成1,024個kilobyte.