She tried to get a purchase on the slippery rock.

她设法抓牢光滑的岩石。

《牛津词典》

Princeton or Stanford degree is worth much more than one from Slippery Rock State University.

一个普林斯顿或者斯坦佛大学的学位要比阿狗阿猫大学的文凭有价值得多。

youdao

The rock was slippery as a ball, and they had to crawl rather than climb.

岩石滑得像个球，他们无法爬行，只能匍匐前进。

youdao

Placing it there was the idea of Richard Wukich, an art professor at Slippery Rock University in Pennsylvania.

VOA: special.2009.06.22

Slippery Rock University isn't the only school making changes to graduation ceremonies because of swine flu fears.

CNN: Students can't be part of main graduation because of Mexico trip

For example, 22 students Slippery Rock University in Pennsylvania who just returned from from a five-week trip to Mexico City will get their diplomas at a separate ceremony when they graduate Saturday.

CNN: Confirmed number of global swine flu cases: 367 and counting

Go ahead and use 'em up, I thought, as I broke into a half-run down the slippery, rock-strewn path.

FORBES: Pain is good