Only the hours are marked, by the striking of a bell: the original purpose may have been to call the monks to prayer.

这个钟的款式非同一般，既没有指针也没有刻度盘，只有在准点才报时，方法是敲钟，也许其初衷就是召唤僧侣们该做祈祷了。

youdao

Or the monastery's founder, Saint John of the Ladder, whose call to self-denial and spiritual warfare has been a sort of manifesto for monks ever since?

ECONOMIST: Saint Catherine's monastery