The relationship between both of them is on the rocks.

◆on the rocks
字面词义：在岩石上。
真正含义：遭遇困难（多半指人际关系或经济问题）。

◆句子翻译
他们俩之间的关系非常不好。

1、When we are on the rocks, we should make some ideas to deal with it.
如果我们遇到困难的话，要想办法去解决它。
2、She said her marriage would go on the rocks soon.
她说她的婚姻即将破裂。
3、The company has been on the rocks for two years.
这公司出现财政困难已有两年了。
4、The company looked to be on the rocks in 1992 but made a remarkable recovery in recent years.
这家公司在1992年的时候遇到了财务危机，可是近几年来它已经完全缓过气来了。

5、The company has been on the rocks since the internet bubble was exploded.
自从互联网泡沫爆破了以后，这公司就一直困难重重。
6、Our accountant says the business is on the rocks.
我们的会计师说生意濒临破产。
7、Six months after the wedding, their marriage was on the rocks.
婚后六个月他们的婚姻就告急了。
8、Can I borrow next month's rent? I'm on the rocks.
给我借下个月的租金吧，我身无分文了。