Aiming at the face slab appearing usually the crack problem, this text analysizes face crack mechanism.

针对面板经常出现裂缝问题，对面板的裂缝机理进行了分析。

youdao

I kept a straight face as long as I could, but I finally had to crack up.

我尽量板着面孔，但最后还是控制不住失声大笑起来。

《新英汉大辞典》

The leak could come from a poor fit between the mask and the user's face, or from a crack or hole somewhere on the mask.

漏气可能是由于穿戴着脸部和面具大小不合适，或者面具上有裂缝或漏洞。

youdao

Joel clobbers his drums as Scotty tears off his dripping T-shirt and snaps it at one of the garbage throwers, hitting him right in the face with a twangy crack snrack like my brothers snapping bath towels, but sharper.

NEWYORKER: Ask Me If I Care

Regulars here include The Derailers, an upbeat country band guaranteed to crack a grin on the dourest face, and Don Walser, an icon of country yodelling (yes, yodelling).

ECONOMIST: Country music

He appeared before St Helens Magistrates' Court on Saturday to face charges of possession with intent to supply cocaine, possession with intent to supply crack cocaine, and being concerned in the production of crack cocaine.

BBC: NEWS | UK | England | Merseyside | Ex-Everton player on drugs charge