Even a vastly more ecoeffi cient industrial system could,were it to grow much larger, generate more total waste and destroy more habitat and species than would a smaller, less ecoeffi cient economy。
Even a vastly more ecoefficient industrial system could, if it(the vastly more ecoefficient industrial system) were to grow much larger, generate more total waste and destroy more habitat and species than would a smaller, less ecoefficient economy.
Even a vastly more ecoeffi cient industrial system could(,were it to grow much larger,) generate more total waste and destroy more habitat and species than would a smaller, less ecoeffi cient economy。
were it to grow much larger是插入语,倒装,可以理解成 if it were grow much larger,
原句是 可以简化成 vast ecoeffient system could generate more …… and more……than smaller less ecoeffi cient one would do