k

/keɪ/ (bre, ipa) · [kˈe] /keɪ/ (ame, ipa) · [kˈe] /ˈkā/ (ame, mw)

k — 名詞

  • ksingular
  • ksplural

1. the letter in the English alphabet that follows J and comes before L

1.名詞A1
釋義

字母

英文字母表的第11個字母

the letter in the English alphabet that follows J and comes before L

例句

The word "kangaroo" starts with the letter K, just like the word "kite."

「kangaroo」這個字以字母 K 開頭,就像「kite」一樣。

correct use of the letter in a word

The teacher asked the children to write both a big K and a small k.

老師要小朋友寫大寫的 K 和小寫的 k。

uppercase vs lowercase distinction

用法筆記

K is one of the less frequent letters in English. In some words borrowed from Greek (like knee or know), the letter k is written but not pronounced when it comes before n.

常見錯誤

I got an K on my spelling test.
I got a K on my spelling test.
💡Use 'a' before K because it starts with a consonant sound (/keɪ/).

2. a short way of writing kilobyte, used to describe how much space a computer has

2.名詞B1
釋義

千位元組

電腦儲存容量單位,約等於一千個位元組

a short way of writing kilobyte, used to describe how much space a computer has for storing information; one kilobyte is 1,024 bytes

例句

Cole's old phone had only 64K of memory for storing text messages.

Cole 的舊手機只有 64K 的記憶體來儲存簡訊。

K as a storage unit for memory

The image file was 128 K in size and took a few seconds to load.

那個圖片檔的大小是 128K,花了幾秒鐘才載入。

同義詞
  • kilobyte

    the full form of the abbreviation K

用法筆記

In everyday use, 1K of computer storage often means roughly 1,000 bytes. The precise value is 1,024 bytes, but the difference is small enough that people often round down.

常見錯誤

My photo is 500K big.' (ambiguous).
My photo is 500K in size.
💡Specify 'in size' or use 'My photo takes up 500K.'

3. an informal written way of saying one thousand, used most often when talking abo

3.名詞A2
釋義

一千

一千(尤其用於金額的書面簡寫)

an informal written way of saying one thousand, used most often when talking about amounts of money such as dollars or pounds

例句

Shanti earns around 50K a year as a nurse in the city.

Shanti 在城裡當護士,年薪約 50K。

K for salary amounts

The repair work on their old house cost them over 30K.

他們那棟舊房子的維修費用超過 30K。

同義詞
  • thousand

    the full formal form of the amount

  • grand

    informal term, also used for one thousand dollars or pounds

用法筆記

K for 'thousand' is common in job ads, real estate listings, and casual financial discussions. Use it only in writing — in speech, people say 'thousand' or 'grand.'

常見錯誤

The project needs 200K dollars.
The project needs 200K.
💡K already means 'thousand,' so adding 'dollars' is unnecessary but acceptable in casual use.

4. the short written form of kelvin, a scientific scale used to measure temperature

4.名詞B2
釋義

克耳文

克耳文溫度單位的縮寫

the short written form of kelvin, a scientific scale used to measure temperature where zero is the coldest temperature possible

例句

The experiment required the sample to be cooled to 77 K using liquid nitrogen.

實驗需要用液態氮將樣本冷卻到 77 K。

K as a unit after a temperature number

Rachid noted in his lab report that water boils at 373.15 K at sea level.

Rachid 在實驗報告中寫道,水在海平面沸騰的溫度是 373.15 K。

同義詞
  • kelvin

    the full name of the unit that K abbreviates

用法筆記

Unlike Celsius or Fahrenheit, the kelvin scale has no degree symbol — write 273 K, not 273°K (though the latter is still seen in older texts). K is placed after the number without a space in some style guides, though a space is also common.

常見錯誤

The metal melts at 500°K.
The metal melts at 500 K.
💡The degree symbol (°) is not used with kelvin in modern scientific writing.