All he needs to do is make one phone call and I'm a marked man.他只消打一个电话,我就大难临头了。She could not sleep at night and was haunted by a presage of disaster.她夜不能眠,总觉得有大难临头。When disaster strikes, we will be prepared.大难临头时,我们会做好应对准备的。A sense of impending doom came upon all of us.我们所有人都有一种大难临头的感觉。