That is what the experience from the cap-and-trade program for acid rain suggests: costs came in well below initial predictions.
从酸雨灾害下实施的配额交易得出的经验是，实际代价总不愈起初的预计。
That is what the experience from the cap-and-trade program for acid rain suggests: costs came in well below initial predictions.
从酸雨灾害下实施的配额交易得出的经验是，实际代价总不愈起初的预计。
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