Gravitational waves are fluctuations in the curvature of space and time which propagate through the universe as gravitational waves — outward from its source.
时间与空间的弯曲贯穿整个宇宙,其中的起伏就是重力波,它自起源处向外散发。
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The curved concrete walls and floors arch up and outward, deriving their structural integrity from their shell-like double curvature.