Rock是“岩石”，hard是“坚硬的、麻烦的”。这个词组是什么意思呢？请看对话：

    A: What’s troubling you?

    B: I found myself stuck between a rock and a hard place. My car got a big dent in it this morning. I either have to spend quite a sum to have it repaired or drive around with an unsightly dent on my vehicle.

    Note: If one is stuck between a rock and a hard place, it would be difficult for him to get out. This idiom means being in a dilemma where the only two available options are both unsatisfying. The phrase’s origins are apparently rooted in the United States in the early 20th century.