出处：按学科分类—语言、文字 中国对外翻译出版公司《汉英成语词典》第121页（266字）
在情况紧急时依然镇静不慌，例飞机因故需要紧急降落，乘客们都张皇失措，唯独他泰然自若，照常啜着威士忌酒。
Most of the passengers panicked when the plane had to make an emergency landing．Only one passenger remained quite composed and went on sipping his glass of whiskey．