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

1.
時間不多了, 時間緊迫
time is running out; there is not much time left to do something
:
•
We need to make a decision quickly, the clock is ticking.
我們得趕緊做決定,時間不多了。
•
With only an hour left before the deadline, the clock was ticking down for the students.
距離截止日期只剩一小時,學生們時間不多了。