| 释义 |
a head-scratcherA thoroughly complex or difficult mystery, problem, puzzle, or riddle. I'm not sure how we'll be able to reach an agreement with the labor unions on this issue. It's a head-scratcher, to be sure. A: "What is weightless but can be seen, and if you put it in a bucket, it will make the bucket lighter?" B: "Hmm, I don't know. That's a real head-scratcher!" |