名詞 pop up:

1. a book (usually for children) that contains one or more pages such that a three-dimensional structure rises up when a page is opened
   同義詞：pop-up book, pop-up
2. a short high fly ball
   同義詞：pop fly, pop-fly, pop-up

動詞 pop up:

1. appear suddenly or unexpectedly
   同義詞：crop up, pop

1. He seems to pop up in the most unlikely place.
   在他似乎絕不可能到的地方，他往往就在那里出現。
2. As we walked along, we saw a rabbit pop up from its burrow and scurry across the field.
   我們正在向前走著，看到一只兔子突然從洞里跳出來，穿過田野。
3. He seems to pop up in the most unlikely places.
   在他似乎絕不可能到的地方，他往往就在那里出現。