megabyte

IPA/ˈmeɡəbaɪt/
KK[mˈɛɡəbˌaɪt]IPA/ˈmeɡəbaɪt/

megabyte — 名詞

  • megabytesingular
  • megabytesplural

1. a unit for measuring digital information in the binary system used by computers.

1.名詞B1
釋義

兆位元組

2²⁰位元組，電腦記憶體單位

a unit for measuring digital information in the binary system used by computers. One megabyte equals 1,048,576 bytes (2²⁰), which is 1024 multiplied by 1024. RAM, processor cache, and system firmware are typically described using this binary value.

例句

Jiwoo added 256 megabytes of video memory to the old laptop for basic gaming.

Jiwoo 為舊筆電增加了 256 兆位元組的顯示記憶體，用來玩基本遊戲。

number + megabytes + of + noun for describing capacity

Iker checked the system menu and saw the router had only 16 megabytes of flash memory.

Iker 檢查系統選單，發現路由器只有 16 兆位元組的快閃記憶體。

常見搭配
  • megabytes of RAM
  • megabytes of memory
  • megabytes of cache
  • megabytes of video memory
  • megabytes of flash storage
同義詞
  • mebibyte

    the precise International Electrotechnical Commission (IEC) name for 1,048,576 bytes; used in technical documents but rare in everyday language

  • MiB

    the abbreviation for mebibyte; found in Linux system monitors and scientific computing

文法句型

number + megabytes + of + noun

用法筆記

This binary definition (2²⁰ = 1,048,576 bytes) is the standard used for RAM and system memory. It differs from the decimal definition (sense 2) used by storage drive manufacturers. The precise name for this binary unit is mebibyte (MiB), though the term megabyte (MB) remains far more common in everyday use.

常見錯誤

I downloaded a 5-megabit file' (when the file is 5 MB).
I downloaded a 5-megabyte file.
One megabyte equals 8 megabits; confusing the two changes the size by a factor of 8.
My hard drive has 500 megabytes of storage' (using the binary meaning).
Check the manufacturer's labelling
hard drives use the decimal megabyte (1,000,000 bytes), which is slightly smaller than the binary megabyte (1,048,576 bytes).

2. a unit for measuring data storage capacity in the decimal system. One megabyte e

2.名詞B1
釋義

百萬位元組

10⁶位元組，儲存容量單位

a unit for measuring data storage capacity in the decimal system. One megabyte equals 1,000,000 bytes (10⁶), which is 1000 kilobytes. Hard drives, USB drives, and advertised file sizes are most often given in this decimal value.

例句

Mayumi backed up the photos on her phone and freed 300 megabytes of storage space.

Mayumi 備份了手機裡的照片，釋放出 300 百萬位元組的儲存空間。

number + megabytes + of + noun for freed/used storage

Ishaan compressed a video file from 200 megabytes down to 40 megabytes for email.

Ishaan 將一個影片檔從 200 百萬位元組壓縮到 40 百萬位元組，以便用電子郵件寄出。

from + number + megabytes + down to + number + megabytes (change in size)

常見搭配
  • megabytes of storage
  • megabytes of space
  • megabytes of data
  • megabytes of capacity
  • megabytes per second
同義詞
  • million bytes

    an informal phrase that makes the decimal value explicit

文法句型

number + megabytes + of + noun

用法筆記

Storage manufacturers and most operating system file managers use this decimal definition (1 MB = 1,000,000 bytes) when displaying capacity. However, some operating systems (notably older versions of Windows) show capacity using the binary definition, which can confuse users who see a smaller number than the drive's advertised size.

常見錯誤

My new 500 GB hard drive shows only 465 GB on my computer — it must be broken.
The difference is normal: drive makers use decimal gigabytes (1 GB = 1,000,000,000 bytes) while the OS may report in binary gigabytes (1 GB = 1,073,741,824 bytes). The same rounding happens with megabytes.
A megabyte is always 1,000,000 bytes.
A megabyte can mean either 1,000,000 bytes (decimal) or 1,048,576 bytes (binary) depending on context. The IEC now recommends 'mebibyte' (MiB) for the binary value to avoid confusion.

同根字

常見搭配

名詞搭配

副詞搭配

常用片語

  • megabytes of data
  • megabytes of storage
  • megabytes of memory
  • megabytes per second
  • in megabytes
  • megabytes in size

介系詞搭配