英雄难度中救火机器人沉默光环(这样比较好理解)缩小影响范围，普通难度中直接移除。
The range of the Emergency Fire Bot's Deafening Siren ability has been reduced in heroic difficulty and this ability is no longer cast in normal difficulty.
英雄难度中救火机器人沉默光环(这样比较好理解)缩小影响范围，普通难度中直接移除。
The range of the Emergency Fire Bot's Deafening Siren ability has been reduced in heroic difficulty and this ability is no longer cast in normal difficulty.
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