When a trust was established between strangers, their credentials were exchanged only once, and two parties exchanged the secret keys iteratively until the trust negotiation succeeded or failed.

陌生的双方在建立信任关系时，仅仅交换一次信任书，随后多次交换对称密钥，直到协商完成或者失败。

youdao

Unfortunately, he failed to see that his wife was asking the question not to get an instant decision, but to begin a negotiation.

丈夫没有弄明白：他妻子提出那个问题并不是需要他当场做出决定，而是在跟他打商量。

youdao

Efforts to bring the two sides to the negotiation table have so far failed.

BBC: Thousands protest against Nepal PM

Mr Clinton unveiled his blueprint at the end of a negotiation that had failed.

ECONOMIST: The United States, Israel and the Arabs