One possible explanation for these positrons is the mutual annihilation of the matter and antimatter forms of a type of dark matter called weakly interacting massive particles, also known as WIMPs.

对这些正电子有一个可能解释，就是它们来自同一种暗物质以正、反物质形式出现的一对粒子的碰撞（物质湮灭），这样的暗物质又被称为“大质量弱相互作用粒子”（WIMP）。

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Photons were, indeed, produced in great numbers by the mutual annihilation of the primitive particles and antiparticles.

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We are working toward a new security relationship with Russia whose foundation does not rest on the prospect of mutual annihilation.

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One possible explanation for these positrons is the mutual annihilation of the matter and antimatter forms of a type of dark matter called weakly interacting massive particles, also known as WIMPs.

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