这是真的，当物质和反物质相遇时，它们会在大爆炸相互湮灭，然后把它们的质量转换为能量。
It's true that when matter and antimatter meet, they do annihilate in a big explosion and convert their mass to energy.
当一小块反物质击打天文台并与“正常”的物质相碰撞时，两个粒子都立即湮灭，并转变为伽马射线-费米就可以检测到它。
When a piece of antimatter strikes the observatory and collides with "normal" matter, both particles immediately annihilate and are transformed into gamma rays - which Fermi can detect.
当物质和反物质相遇时，它们就会自动湮灭，并在强大的爆炸中把它们的质量转换成能量。
When matter and antimatter meet, they annihilate, converting their mass into energy in a powerful explosion.
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