科学家们正在探索多元宇宙理论，试图理解我们宇宙之外的其它可能性。

Scientists are exploring the ___multiverse theory to understand other possibilities beyond our own universe.

这部科幻小说讲述了一个角色穿越多重宇宙寻找真爱。

The sci-fi novel follows a character traveling through the ___multiverse to find true love.