1.senate n．参议院，上议院( an assembly or council usually possessing high deliberative and legislative functions)
词根记忆：sen(老)+ate(表人，职位)--资格老的人组成的领导班子--上议院
例：The Senate has approved the immigration legislation.
派生词：senator(n．参议员)
2.sensation n.感觉(awareness)；引起轰动的人或事(wonder)
词根记忆：sens(感觉)+ation--感觉
例：the sensation of pain疼痛感//a worldwide sensation举世轰动的事
3.sensational a．轰动的(of or relating to sensation or the senses)；非常好的(exceedingly or unexpectedly excellent or great)
词根记忆：来自sensation(n．感觉；轰动)
例：Published during the late eighteenth century, Diderot's factual Encyclopedia and his friend Vottaire's fictional Candide were the cause of a scandal so sensational that both men prudently chose to embark on extended vacations in nearby Austria.
派生词：sensationalist(n.感觉论者)
4.sensible a．明智的(wise)
例：A sensible preservation strategy would assist the farmers to modernize their farms.
5.sensitive a．(to)敏感的；易波动的( highly responsive or susceptible)
词根记忆：sens(感觉)+itive--感觉灵敏的--敏感的
例：Some insects are not sensitive to the pesticide.
派生词：sensitivity(n.敏感：敏感度)
同根词：sensory(a．感觉的；感官的)
6.sensitize v.（使某人或某事物）敏感(to make sensitive)
例：An allergy has sensitized my eyes to pollution in the air.
7.sentence n.句子（a string of words satisfying the grammatical rules of a language）；宣判，判决(judgment)；v.判决，宣判(to impose a sentence on)
例：Some legislators advocate mandating a sentence of life in prison for anyone who, having twice served sentences for serious crimes, is subsequently convicted of a third serious crime.
派生词：sentential(a．句子的：判决的)
8.sentient a．有感觉的，有知觉的（aware）
词根记忆：sent(感觉)+ient--有感觉的
例：Some people think that scientists ought not to test the safety of new drugs on sentient animals.
9.sentiment n.多愁善感(a tender feeling or emotion)；思想感情
词根记忆：senti(感觉)+ment--思想感情
例：There is considerable sentiment among voters in most areas of the state for restriction of smoking.
派生词：sentimental(a．多愁善感的)
同根词：sensory(a．感觉的)：resentment(n．怨恨)