An object about the size of mars-half the size of earth-slammed into our planet very early in its formation, the theory says.

这个理论认为，在早期的时候，地球曾经被一颗火星般大小(相当于地球体积的一半)的行星撞击。

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One prediction of Einstein’s theory of general relativity is that when a large object moves, it drags the space-time around it, causing nearby objects to be pulled along as well.

爱因斯坦广义相对论有一个预测：当一个巨大的物体移动时，会拖拽周围的时空，从而拉着附近的物体一起动。

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So onlookers are left with the impression that there is little or nothing about Darwin's theory to which a scientific naturalist could reasonably object.

因此留给旁观者的印象，就是达尔文的理论几乎没有可供自然科学家有据驳斥的地方。

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One theory is that the military could object if the ruling party looks for friendship with South Korea to help save North Korea's economy.

VOA: special.2010.10.02

It's a supposition that whatever the object of theory might be, - theory itself must-- owing to whatever intellectual constraints one can imagine-- be of such and such a form.

不管理论是关于什么事物的，它自己都只能-,由于人们思想的局限性-,以猜想的形式存在。

耶鲁公开课 - 文学理论导论课程节选

Because the theory relies on an object that itself has already found a way to grow to the size of Mars, the bow shock idea creates a bit of a chicken or egg problem.

FORBES: Planets Made Easy: The Cosmic Glue That Binds Us All

Some investors object to investing in an index on the theory that if they can pick the best performing stocks within the index they can outperform the index.

FORBES: Small Cap Stocks And ETF To Milk The January Effect