The competition between the groups became very contentious, Panek said, and they grew to dislike each other quite a lot.

两个团体间的竞争不可调和，潘尼克说，然后他们变得彼此反感。

The pocket appears on the oldest pair of jeans in the Levi's archives, which date to about 1879, Levi's historian Tracey Panek told HuffPost.

研究李维斯的历史学家特雷西·帕内克告诉《赫芬顿邮报》，档案显示，李维斯生产的第一条牛仔裤上就已经出现了迷你表袋，能追溯到大约1879年。

In Panek's new book, "The 4 Percent Universe" (Houghton Mifflin Harcourt, 2011), Panek recounts the story of how dark matter and dark energy were discovered.

在潘尼克的新书《4％的宇宙》（哈考特出版社，2011）中，潘尼克详述了暗物质与暗能量怎样发现的经过。