belly knife

基本解释

Don't picture the windowsill as a dull hot knife slitting open your belly.
不要把窗沿想象成一把滚烫钝刀子在为你开膛破肚。
The man slit the creature's belly with a short knife, spilling the dewy beige guts into a bucket.
这个店员用一把短刀划开了这条鱼的肚子，把那些湿漉漉的呈浅褐色的内脏扔进桶里。
Though it may be part of Japan's food folklore, it is said that in Tokyo the eel is filleted along the back to avoid mimicking the samurai warrior's ritual knife-in-the-belly suicide.
虽然也许只是日本食品的民间风俗，但据说东京人从后背片开鳗鱼是为忌讳武士切腹自杀的仪式。

The men separated, the knife handle protruding from the belly of the one in the uniform.
NPR: Excerpt: 'Killer Weekend'