1、极为冷静的
... as clear as day 一清二楚的（像白天一样清楚）的 as cool as a cucumber 极为冷静的（像黄瓜一样冷静）的 as easy as a pie 极容易（像馅饼一样容易）的 ...
2、非常冷静
* as cool as a cucumber 非常冷静，镇定自若* couch potato 极为懒惰的人;成天躺着或坐在沙发上看电视的人
3、异常冷静
as cool as a cucumber 非常冷静; 极为冷静的(像黄瓜一样冷静); 异常冷静; 镇定自若..
4、镇定自若
as cool as a cucumber 非常冷静; 极为冷静的(像黄瓜一样冷静); 异常冷静; 镇定自若...