Scientists are hot on the tail of one of nature?s most elusive substances, the mysterious dark matter that is thought to make up the bulk of the universe.

科学家们正在热切的追逐着自然界中最难以捉摸的物质——神秘的暗物质，一般认为它构成了宇宙的大部分组成。

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But the scope of the investigation has since widened to regions including Latin America, where the company garners the bulk of its sales and profits, according to the person familiar with the matter.

知情人士说，随后调查范围扩大到拉美等地区，雅芳的很大一块销售收入和利润都来自拉美。

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The relativistic mean field theory consistent with bulk properties of nuclear matter is extended to study the excitations of the sound-like collective modes in nuclear matter.

跟核物质主要特性相一致的相对论性平均场理论被用来研究核物质里的类声集体模式的激发。

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If Dr Biermann and Dr Kusenko are right about sterile neutrinos forming the bulk of dark matter, that would clear up several puzzles about the universe.

ECONOMIST: Research from the beginning of time

One experiment measured the brain structure of pathological liars, and compared it to normal controls more specifically, the ratio of gray matter (the neural tissue that makes up the bulk of our brains) to white matter (the wiring that connects those brain cells).

FORBES: Do Liars Really Have Different Brains?

As a matter of fact, the bulk of the government revenue will be used to feed people and to fight crime.

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