(5)Odd though it sounds, cosmic inflation is a scientifically plausible consequence of some respected ideas in elementary particle physics, and many astrophysicists have been convinced for the better part of a decade that it is true.

(5)虽然听起来很奇怪，但宇宙暴胀是基本粒子物理学中一些受人尊敬的想法在科学上合理的结果， 许多天体物理学家在十年的大部分时间里都相信这是真的。