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1.steep a．极高的(extremely or excessively high);v.沉浸(to make throughly wet);充满（to fill with or subject to）
例：Producers rose prices at an unexpectedly steep rate in September.// The officers were steeped in the traditions of the separate services.
派生词：steeply( ad.陡峭地)
2.steer n．肉用公牛(young, usu. castrated male animal of the ox family, raised for its meat);v．掌舵(to guide by mechanical means)
例：Cattle breeders have increasingly used crossbreeding so that their steers can acquire certain characteristics.
3.stem n.茎，干(the main trunk of a plant)；v.(from)起源于(to originate)；阻断(to stop or dam up)
例：brain stem脑干//Government revenues mainly stem from the various taxes.//The dam stemmed the river's flow.
4.steppe n.（尤指东南欧或西伯利亚地区）无树木的大草原(one of the vast usually level and treeless tracts in southeastern Europe or Asia)
联想记忆：step(步)+pe--在大草原漫步一定很惬意--无树木的大草原
例：the Eurasian steppes欧亚大草原
5.stereotype n．铅版(a plate cast from a printing surface)；陈规(something conforming to a fixed or general pattern)；v.使…一成不变（to repeat without variation）
例：break through the stereotypes打破陈规//Most Americans' knowledge of American Indian culture was stereotyped.
派生词：stereotyped(a．固定不变的；刻板的)
6.sterile a．不育的（failing to produce or incapable of producing offspring）；贫瘠的(barren)；无效果的(unproductive)
例：The sten7e couple adopted two children.//sten7e land贫瘠的土地//The economic reform of this country was sterile.
7.stew n．炖菜（肉）(fish or meat usually with vegetables prepared by stewing)；v.炖（to become cooked by stewing)
发音记忆：“死丢”--拼命往锅里丢东西--炖
例：Meat of lguanas(美洲大蜥蜴)is usually cooked in a heavily spiced stew by Latin Americans.//The cook stewed the ham hocks for a few hours.
8.stiffness n．僵硬（rigidity）；顽固(stubbornness)
词根记忆：来自stiff(a．呆板的)
例：Unlike the body's inflammatory response to cuts and sprains in which widespread swelling and stiffness immobilize the injured area until it has healed, the body's more localized response to sunburn results in a distinct line dividing affected and unaffected areas of the skin.
9.stimulant n.刺激物(stimulus);兴奋剂(an agent as a drug, that produces a temporary increase of the functional activity or efficiency of an organism or any of its parts)
词根记忆：stimul(刺激)+ant--刺激物
例：An age of political excitement is usually a stimulant to literature.// Caffeine is the stimulant in coffee.
同根词：stimulus(n．刺激；刺激物)
n. 分开，抽印本
adj. 分开的，各自的，
