Which came first, black holes or galaxies?

是先有黑洞呢？还是先有星系？

youdao

Which came first, the quasar or the galaxy?

类星体和星系哪一个形成在前呢？

youdao

All these findings beg the question, which came first?

所有这些研究都指向一个问题：谁才是罪魁祸首？

youdao

It has a name which is the first name of the husband or the wife or the town where they came from -- Lois,Tony's,Estelle's,or Maria's, or the Calaberian or the Belonia.

VOA: special.2010.08.28

When the uncertainty gets that big, you don't know which came first.

当不确定度到那么大的数值时，你不知道谁是第一个到达的。

麻省理工公开课 - 固态化学导论课程节选

But even after that, even after our first two records which came out in nineteen seventy, our only initial goal was to make one record which we thought would be a classic in a field.

VOA: special.2010.04.19

It is like trying to establish which came first: The chicken or the egg.

BBC: Arab press lambasts Jenin report

The discovery of the statues raises an intriguing question - which came first, the statues or Ovid's famous poem?

BBC: 'Exceptional' find of Roman statues linked to poet Ovid

The big question is which came first: positive outlook as a result of a successful business or an innovative business?

FORBES: Innovation and Growth: Which Comes First, the Chicken or the Egg?