It appears that the shell has to crack open or break down somewhat to allow the seed to soak up water.

看来，为了让种子吸收水分，种子的外壳必须裂开或破裂。

youdao

As more high schools begin teaching it, the door could crack open for middle schools, and, perhaps inevitably, elementary schools, to incorporate a truly more multicultural curriculum.

随着更多的高中开始教授多元文化课程，中学可能也会对其敞开大门，并且小学也可能不可避免地将其纳入课程设置中，真正教授更具多元文化的课程。

youdao

It was always covered with magazines he knew he'd never crack open.

那里总是堆满了各种各样杂志，但他从来就没有翻开过。

youdao

When I had waited a long time, without hearing him lie down, I decided to open a little -- a very,very little -- crack in the lantern.

VOA: special.2009.05.16

Also a nearby volcano erupted four years ago,ripping open a crack in the Great Rift Valley.

VOA: standard.2009.12.14

Regardless, listen up, BPP universe, because it's time to crack open the BPP Jukebox.

NPR: 'BPP' Jukebox: Peter, Bjorn and John Soloist

Crack open a set-top box or a DVD player and you'll almost certainly find a MIPS chip.

FORBES: Magazine Article

And it now looks as if Intel will use its manufacturing prowess to crack open the graphics market.

FORBES: Intel Grinds Toward Graphics