The sentence is here:
"Australian agricultural authorities have anncouced they are to trial a new milking system THEY BELIEVE COULD REVOLUTIONIZE life for the average dairy farmer.
What I concern is that there seemingly there are 2 verbs in one sentence "believe" and "revolutionize", am I correct? or if the sentence is in fact corrent?
Thanks
更新1:
Thanks for those who answered my question. Now I have a clearer understanding about the sentence. Could the sentence be rewrite as below: Australian agricultural authorities have anncouced (that) they are to trial a new milking system (that) THEY BELIEVE (that) COULD REVOLUTIONIZE life for the average dairy farmer Where (that)s are just omitted in the original sentence. Is my thought correct?