In general relativity, time is considered a dimension like height, width and depth, creating a four dimensional universe called space-time.
在广义相对论中，时间被看作和长宽高一样的维度，并与它们构成了一个四维宇宙—被称作时空。
Its description of time travel in a four-dimensional universe presaged the cottage industry in theoretical space-time machines that has sprung up among physicists in recent decades.
近几十年中物理学家们争先恐后进行理论上时光机器的研究，就证明《时间机器》关于四维宇宙中时光旅行的描写极具预见性。
We live in a four-dimensional universe, moving in length, breadth, height and time.
我们生活在一个四维空间中，这四维包括长度、宽度、高度和时间。
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