“惊慌的”用英语怎么说

她是个非常沉着的人。没什么能让她惊慌的。She was a very calm person. Nothing could fluster her.他好象见了鬼似的(很惊慌的样子).He looked as if he had seen a ghost.护士长逼近了那些惊慌的护士们.The matron bore down upon the terrified nurses....