一发千钧

zài zhè yī fà qiān jūn de shí kè wǒ men bù néng fàng qì

在这一发千钧的时刻，我们不能放弃。

At this critical moment, we can't give up.

zhè cì dēng lù shì yī fà qiān jūn de cháng shì

这次登陆是一发千钧的尝试。

The landing was a decisive attempt.

yī fà qiān jūn zhī jì róng bù dé yī diǎn cuò wù

一发千钧之际，容不得一点错误。

There is no room for error at the last moment.