a cat nap 意为“打个盹儿”
例句：
1. I try to take a little cat nap every Sunday afternoon.
我试着在每个周日的下午小睡一会儿。
2. I was up late last night so I had a cat nap at my desk today.
我昨夜很晚才睡，所以今天趴在桌子上偷偷打了个小盹儿。
3. After working in the garden all morning, I had a cat nap before lunch.
整个上午我都在花园里干活，午饭前我小憩了一会儿。