"This was a hugely significant attack plan. With that number of aircraft, with the types of destination that were being talked about, it is conceivable to think of upwards of 2,000 casualties in the air depending on the point of detonation whether others would have been caught on the ground as well.

VOA: standard.2009.09.07

Water boils at different temperatures, depending on what the atmospheric pressure is; same thing for the freezing point.

丹佛和波士顿水的沸点，就不一样;,在不同的大气压下。

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