Slot your foot (big toe up, pinky toe down) into the crack up to the arch of your foot, keeping your knee out to the side.

把你的脚尖（大脚趾在上，小指在下）楔入裂缝中去，直到你的足弓的部分，膝盖保持向外。

youdao

The contracting parties shall conduct cooperation to crack down on illegal immigration, including the crack down on illegal transportation of natural persons via its territory.

缔约双方将合作打击非法移民，包括打击通过本国领土非法运送自然人的行为。

youdao

Meanwhile, the Ministry of Education published a circular last week urging universities to crack down on academic misconduct and to report all the cases they uncover.

与此同时，上周教育部发表了一份通告，敦促各大学严惩学术不当行为，并披露所有被隐瞒的案例。

youdao

Every once in awhile, the rangers must crack down on reckless pilots of air boats that skim across the swamp, endangering themselves and others and tearing up delicate foliage.

VOA: standard.2010.03.29

That is something that we can stop," President Calderon has repeatedly urged the United States to crack down on arms shipments south of its border, saying 90 percent of weapons in the hands of drug traffickers originate in the U.S.

VOA: standard.2009.04.17

About the size of a dollar bill, the mud covered the carpet and spanned the crack of the trapdoor that led down into the three-foot-high crawl space beneath the house.

NPR: Excerpt: 'Killer Weekend'

When you - you're crack climbing a thin crack, you stick your toes into the crack and then kind of wrench down on to stand up, and it's painful.

NPR: Craig DeMartino: Winner in the Extremity Games

He loses a big, old eucalyptus or pine tree every couple of years, and the library which looks ancient but was built from scratch five years ago has a long crack down the middle of the floor.

WSJ: The Most Important Garden Designer You've Never Heard Of