这些气体对环境造成难以估计的破坏。
地热能对世界未来能源的贡献是难以估计的。
The contribution of geothermal energy to the world's energy future is difficult to estimate.
这种停机所造成的损失对严格限制下线时间的系统来说是难以估计的。
This stop may be a great loss to the system which severely restricts its off-line time.
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