nowhere dense set

例句：

1. 1. I've been looking for my keys everywhere but can't find them.
   我到处找我的钥匙，但就是找不到。
2. 2. He was nowhere to be found after the storm.
   暴风雨过后，他无处可寻。
3. 3. The movie was so boring that we couldn't wait to leave the theater.
   这部电影太无聊了，我们等不及要离开电影院了。