1‘they stood on the threshold of the church’
doorstep, sill, doorsill, doorway, entrance, entry, way in, door, gate, gateway, portal, approach
2‘these young people are at the threshold of their careers’
start, starting point, beginning, brink, verge, edge, dawn, birth, origin, inception, conception, opening, launch, inauguration, institution, initiation, debut, creation, day one
3‘100 dB is close to the human threshold of pain’
lower limit, starting point, minimum, margin
We take a look at several popular, though confusing, punctuation marks.