https://online2.tingclass.net/lesson/shi0529/0002/2107/nowthat.mp3
https://image.tingclass.net/statics/js/2012
now that
既然，由于
Now that you are grown up, you must stop this childish behavior.
你既已長大成人，就不該再有這種幼稚的行為了。
Now that you mention it, I remember.
既然你提及，我也就記起來了。
