Read Edit View history 额外性 éwàixìng additionality Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 额外性/額外性 · éwàixìng · additionality 2026/03/04 额外性 / 額外性 éwàixìng additionality additionality (economics) 在评估碳减排项目时，证明其额外性至关重要。 created sense Mar 4, 2026, 02:25 AM