the clock is ticking (down)
US /ðə klɑk ɪz ˈtɪkɪŋ (daʊn)/
UK /ðə klɑk ɪz ˈtɪkɪŋ (daʊn)/

1.
il tempo stringe, il tempo sta scadendo
time is running out; there is not much time left to do something
:
•
We need to make a decision quickly, the clock is ticking.
Dobbiamo prendere una decisione in fretta, il tempo stringe.
•
With only an hour left before the deadline, the clock was ticking down for the students.
Con solo un'ora rimasta prima della scadenza, il tempo stringeva per gli studenti.