Volodymiyr Shandra, the Ukrainian Emergency Situations minister, told local media that oxygen canisters being stored in the basement of the building could have triggered the blasts.

乌克兰紧急情况部部长弗拉基米尔·珊德拉告诉当地媒体，存放在大楼地下室的氧气罐可能引发了爆炸。

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Organized tours take the stress out of travel for Shandra Potts .

CNN: We asked: Your vacation planning tactics