さらに～(～更に) sarani ～(～sarani)
Meaning: furthermore; again; more and more
How to use the: さらに + phrase
The expression expressed more progressively than the present. Expression of words in writing, in addition to using polite speech. When used together with quantity, it means more.
Tochū no koya made 5-jikan, sorekara chōjō made wa sarani 2-jikan kakatta.
It took us 5 hours to climb to the hut halfway up the mountain, then from there to reach the summit., we took more than 2 hours
Sarani 5-ri o kaku ga mise ni hairimashita
5 more customers have entered the store
Ano tatemono wa takaiga ano tatemono wa sarani kō i
This building is tall but the other is even higher