equanimity: suggests a habit of mind that is disturbed rarely or only under great strain: accepted fortune's slings and arrows with great ~.     （平静地接受命运的苦难灾祸slings and arrows苦难灾祸，sling是投石机arrow是弓箭，比喻生活中的苦难灾祸hardships and disasters that are not your fault，如he had suffered much slings and arrows in his life他一生经历苦难）


composure: implies great controlling of emotional or mental agitation by an effort of will OR as a matter of habit: maintained his ~ even under hostile questioning.


sangfroid: implies great coolness and steadiness under strain perhaps stemming from a  constitutional coldness: an Olympian diver of remarkable ~.      stem from来自源自，由植物的茎stem引申而来


phlegm: implies insensitiveness and suggests apathy or sluggishness rather than control: possessed of a temperamental ~ unaffected by good news and bad news alike.    性格冷淡，对好坏消息都无感


equanimity平静: 表示不被外界干扰的思想状态(思想习惯habit of mind)，composure控制情绪: 指控制情绪不激动，sangfroid冷静: 冷静稳定，可能来自自身(的冷静coldness)，phlegm冷淡: 表示冷淡缓慢没感觉，而不是自控能力。


记忆方法: 1）首字母spec规范<==平静的描述         specification规范是指精确详细的描述


         2）平静的意思是泰然自若不被干扰mean the quality of one who is self-possessed and not easily disturbed or perturbed.    （self-possessed泰然自若镇定，字面意思是能控制自己to command and control oneself，如answered the insolent question with complete self-possession泰然自若地回答无礼的问题）