在千钧一发之际

zài qiān jūn yī fà zhī jì

at the critical moment; in the nick of time

在

zài

to exist; to be alive

千

qiān

used in 鞦韆|秋千[qiu1 qian1]

钧

jūn

30 catties

一

yī

one

发

fà

hair

之

zhī

(possessive particle, literary equivalent of 的[de5])

际

jì

border