Definition: a rocky relationship has problems and may not last Level: C2
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.
