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1·Dump some food coloring into the tank and see if the color reaches the floor.

快速解决方法——往水箱倒进一些色素，看看是不是有颜色的水滴在地上。

2·This in turn caused the external tank to dump its payload of liquid hydrogen causing a massive explosion.

继而引起附加的燃料罐倾倒液态氢负载，导致一系列爆炸。