He could have threatened her at gun or knifepoint.

他可能用槍或者刀脅迫了她

He marched her half a mile at knifepoint and noone intervened.

他用刀尖頂著她走了半里路 沒人干預

Look, abducting a driver at knifepoint, that's a crazy thing to do.

用刀綁架一司名機 這是個瘋狂舉動

He saved a mum from being mugged at knifepoint and you lot have stuck him for forgetting to fill in the right bloody form.

他救了一個被持刀歹徒搶劫的媽媽 而你們卻因為 他忘記填表難為他