劫机者要挟说，如果他们的要求得不到满足，他们每过一小时就杀死一名乘客。
The hijackers threatened to kill one passenger every hour if their demands were not met.
反叛者以恐吓手段要挟。
讨厌的事情在于，敲诈者开始借以要挟的把柄往往是事实。
The nasty thing about a blackmailer is that his starting point is usually the truth.
应用推荐