Annihilating dark matter at the heart of the Milky Way could account for signals detected by two space telescopes, according to a pair of US physicists.
据两位美国物理学家称，银河中心暗物质湮灭的这一设想，可以解释近年来两台空间望远镜探测到的信号。
(Acquisitions by firms in Brazil and India are part of a more even two-way flow of capital with the rich world.) by contrast, America funds its current-account deficit by selling assets to foreigners.
(巴西和印度对富国公司的收购更多的是与富国之间的双向流动)，与此形成对比的是，美国需要对外出售资产以弥补其流动性的不足。
In this new era, when emerging markets account for two-thirds of global growth, concerted action by the G-20 is the only effective way to confront the challenges that lie ahead.
在这一新时代，新兴市场的贡献占全球经济增长的三分之二，20国集团联手行动面对未来挑战是唯一的有效办法。
Unlike other models of the market in illicit drugs, it takes into account two factors that are crucial to the way sellers and buyers act that tend not to be present in conventional markets.
不像其他非法毒品市场，本模式考虑到对买卖双方行动有至关重要作用的两方面因素，其在一般市场中很难见到。
However, these two account types are now implemented and used in a more secure way.
然而，这两种帐户类型现在是在更为安全的方式下实作和使用的。
However, these two account types are now implemented and used in a more secure way.
然而，这两种帐户类型现在是在更为安全的方式下实作和使用的。
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