they cut off the energy-rich fat and cook it.他们割下富含能量的脂肪部分继续烹煮

cut off切断；剪下

He cut off the branches from the trunk.

他把树干上的小分枝都剪掉。

Please help me to cut off the rinds of lemons.

请帮我去掉柠檬的皮。

Then we take the rest of the meat back to the village然后把剩下的肉带回村子

the rest of其余的

The slide cut off the valley from the rest of the world.

山崩切断了这个山谷与外界的联系。

Soon I dropped behind the rest of the class.

不久我就落在班上其他同志后面了。