They could cut through flesh like a hot knife through butter.

它们切开血肉就像热刀切过黄油一样。

Those sharp, serrated teeth can cut through flesh like a hot knife through butter.

那些带锯齿的牙齿切进血肉就像热刀切过黄油一样。

The laser is essentially getting so hot, the metal is just vaporizing away, like a hot knife through butter.

激光变得非常热，金属就像热刀穿过黄油一样蒸发掉。