全部

1·To date, astronomers have found nearly 500 alien planets, more than 90 of which cross in front of - or transit - their stars from our perspective.

迄今为止，天文学家已发现近500个外来行星，其中90多个在前面交叉-或过境-从我们的角度来看他们的明星。

2·To date, astronomers have found nearly 500 alien planets, more than 90 of which cross in front of -or transit -their stars from our perspective.

迄今为止，天文学家已发现近500个外来行星，其中90多个在前面交叉-或过境-从我们的角度来看他们的明星。