km

km — noun

1. written abbreviation for kilometre — a unit for measuring distance, equal to 1,0

1.名詞A2
釋義

written abbreviation for kilometre — a unit for measuring distance, equal to 1,000 metres.

例句

The nearest hospital is about three km from Femi's house.

abbreviation used after a number to show distance

Camille ran five km every morning before heading to work.

用法筆記

This abbreviation is used mainly in writing after a number (e.g. 5 km). In spoken English, people usually say 'kilometres' in full. Do not add a space between the number and 'km' in formal contexts, though a thin space is acceptable. Note that the metric spelling is kilometre (British) or kilometer (American); the abbreviation km is the same in both varieties.

常見錯誤

❌I walked 5 kms yesterday.
✅I walked 5 km yesterday.
💡km is already plural (kilometres); never add an -s to the abbreviation.
❌The sign says 5 km.' (when in Taiwan, where the metric system is used)
✅The sign says 5公里.
💡In Chinese contexts, use 公里 rather than km in natural written Chinese, though km is understood.