他们的婚姻已经不稳定有一段时间了。

Their marriage has been ___rocky for some time.

那次争吵后，他们的友谊变得有些不稳定了。

After the argument, their friendship became a bit ___rocky.

在整个谈判过程中，两国间的政治联盟关系一直不稳定。

The political alliance between the two countries remained ___rocky throughout the negotiations.