Of all the billions of stars out there，is there none around which intelligent life has arisen.
后半句沒了解的意思是，結構也不太懂，請老師剖析解答，謝謝!
Of all the billions of stars out there，is there none around which intelligent life has arisen.
參考譯文：在那數十億顆恒星之中，沒一顆出現過智慧生命。
后半句為，介詞around+關系代詞which引導定語從句，which指代前面名詞stars.