The observations have significantly decreased the chances that the antimatter is coming from the annihilation or decay of astronomical dark matter.

观测明显的降低了反物质来自于庞大暗物质的湮灭或衰变的可能性。

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In fact, a stock can go to zero (remember a company called Enron?) while it would take a catastrophic event (think nuclear annihilation or an asteroid hitting the earth) for the same to happen to the stock market as a whole.

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