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