当q小于0时，当你失去动能时，通常损失的转化为热量。
Whenever Q is less than zero, whenever you lose kinetic energy, the loss, in general, goes into heat.
价格大战通常损失严重，因为他们破坏了整个行业的定价机制。
Usually, price wars wreak havoc because they erode the pricing power of an entire business.
通常情况下，自然灾害及其所造成的损害是很严重的，尤其是当你考虑经济上和物质方面的损失时。
Normally, a natural disaster and the damage it causes can be very severe, especially when you consider the financial and physical losses.
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