terabyte

terabyte — 名詞

1. A measure of digital data size used in computing, where one terabyte equals 1,09

1.名詞B2
釋義

二進位TB

系統以1024 GB為一TB的容量單位

A measure of digital data size used in computing, where one terabyte equals 1,099,511,627,776 bytes — the binary value that operating systems and software use to represent storage capacity and file sizes. This corresponds to 1024 gigabytes, with each level multiplied by 1024.

例句

Karim checked his computer and saw that his 1-terabyte drive reports 1024 gigabytes in the operating system's binary measurement.

Karim 檢查電腦後發現，他那顆 1 TB 硬碟在作業系統的二進位計算中實際上是 1024 GB。

operating system reports binary terabyte value

Raw video from Ignacio's documentary needed nearly two terabytes on the editing workstation — about 2000 gigabytes of 4K footage.

Ignacio 的紀錄片原始影片在編輯工作站佔了近 2 TB，約等於 2000 GB 的 4K 畫面。

collocation: take up + [number] terabytes

同義詞
  • tebibyte

    The official IEC term for 1,024 gibibytes (2^40 bytes). Used in technical documentation to avoid ambiguity with the decimal terabyte.

文法句型

a/the terabyte of [noun]

[number] terabytes of [noun]

用法筆記

This binary definition (based on multiples of 1024) is the value used by operating systems such as Windows, macOS, and Linux when displaying drive capacity or file sizes. Storage devices labelled with decimal terabytes will show a smaller number of binary terabytes when connected to a computer.

常見錯誤

❌I bought a 2-terabyte hard drive, so my computer shows exactly 2 terabytes of free space.
✅I bought a 2-terabyte hard drive, but my computer shows only about 1.81 terabytes of space.
💡The decimal label (2,000,000,000,000 bytes) is about 10% smaller when converted to binary terabytes.
❌A terabyte is exactly 1,000 gigabytes.
✅A terabyte in computing is 1,024 gigabytes.
💡The binary system uses multiples of 1,024, not 1,000.

2. A measure of digital storage capacity, where one terabyte is set at exactly 1,00

2.名詞B2
釋義

十進位TB

硬碟廠商以1000 GB標示的容量單位

A measure of digital storage capacity, where one terabyte is set at exactly 1,000,000,000,000 bytes — the decimal value that hard drive, solid-state drive, and memory card manufacturers use on product packaging and in advertisements.

例句

Eli bought a 2-terabyte hard drive and expected 2,000 gigabytes of space.

Eli 買了一顆 2 TB 的硬碟，預期會有 2000 GB 的空間。

product label uses decimal terabyte value

A memory card labelled '1 terabyte' gives about 931 gigabytes after formatting.

標示「1 TB」的記憶卡格式化後大約只有 931 GB。

discrepancy between decimal label and actual usable space

同義詞
  • decimal terabyte

    An explicit term used in technical writing to distinguish this 10^12-byte unit from the binary terabyte (2^40 bytes).

文法句型

a/the terabyte [noun]

[number] terabyte [noun]

用法筆記

Hard drive and SSD manufacturers consistently use this decimal definition (1 TB = 1 trillion bytes) for their product labels. The difference between the decimal label and the binary reading shown by an operating system (sense 1) is roughly 9.95% — a 1 TB drive appears as about 931 GB in binary.

常見錯誤

❌A 1-terabyte external drive gives you exactly 1,000 gigabytes of usable space.
✅A 1-terabyte external drive gives you about 931 gigabytes of usable space according to your computer.
💡The operating system counts in binary gigabytes (1,024 MB per GB), while the drive label uses decimal (1,000 MB per GB).