| 单词 | light speed |
| 释义 | Definition of light speed in English:light speednoun ˈlʌɪt ˌspiːd
adjective ˈlʌɪt ˌspiːd
OriginEarly 20th century; earliest use found in The Frederick Post. From light + speed. Definition of light speed in US English:light speednounˈlʌɪt ˌspiːd
adjectiveˈlʌɪt ˌspiːd
OriginEarly 20th century; earliest use found in The Frederick Post. From light + speed. |
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