| 词汇 | quadrillion |
| 词根词缀 | 词源： 1674, from Fr. quadrillion (16c.) from quadri- "four" + (m)illion. Cf. billion. In Great Britain, the fourth power of a million (1 followed by 24 zeroes); in the U.S., the fifth power of a thousand (1 followed by 15 zeroes). |
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