隨后它會(huì)變成什么曾經(jīng)是一個(gè)迷, 直到最后這團(tuán)塵埃開(kāi)始慢慢地合成一個(gè)環(huán)繞太陽(yáng)運(yùn)轉(zhuǎn)的球狀物。（combine into ）

 

 

What it was to become was a mystery until the dust began to slowly combine into a ball moving around the sun.

 

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