准确说，我大部分时间都在研究宇宙大爆炸理论和宇宙的起源。

I guess that would be fair to say I spent most of my time studying the Big Bang theory and where our universe came from.

youdao

宇宙大爆炸理论起始于137亿年以前，而且一直都以非常快的速度在扩张。

The universe began in a Big Bang about 13.7 billion years ago and has been expanding at an ever accelerating rate ever since.

youdao

当时，对宇宙的起源有两个主要的对立理论：宇宙大爆炸理论，稳态宇宙模型。

Back then, there were two major rival theories about the origin of the Universe: the Big Bang theory and the Steady-State model of the Universe.

youdao