千钧一发

a thousand pounds hangs by a thread (idiom) / imminent peril / a matter of life or death

thousand

see 鞦韆|秋千[qiu1 qian1]

30 catties / great / your (honorific)

one / single / a (article) / as soon as / entire; whole; all; throughout / "one" radical in Chinese characters (Kangxi radical 1) / also pr. [yao1] for greater clarity when spelling out numbers digit by digit

to send out / to show (one's feeling) / to issue / to develop / to make a bundle of money / classifier for gunshots (rounds)

hair / Taiwan pr. [fa3]