alcohol['ælkəhɔl] ol=醇这个后缀
a colourless liquid which can make you drunk, and which is also used as a solvent (= a substance that dissolves another) and in fuel and medicines
n. 酒精，乙醇

xylitol ['zailətɔl]
A sweet white crystalline alcohol, C5H12O5, derived from xylose and used especially as a sugar substitute in oral health products
n. 木糖醇

xylophone['zailəfəun]
a musical instrument which consists of metal or wooden bars of different lengths that you hit with a special stick
n. 木琴

serve [sə:v]
in a shop, restaurant or hotel, to deal with a customer by taking their order, showing or selling them goods etc
to work for; to do your duty to
v服务;招待，侍候

例句
Children must be educated to serve their country when they grow up.
必须教育孩子长大后为国家服务。
Pearl is serving at the table.
珀尔在侍候进餐。

service ['sə:vis]
the act of dealing with a customer in a shop, resturant or hotel by taking their order, showing or selling them goods, etc
a government department that is responsible for a particular area of activity:
the time you spend working for an organization:
to examine a machine and repair any faulty parts
n. 服务，服侍；服务业；行政部门；售后服务
adj. 服务性的；耐用的；服现役的
vt. 维修，检修；保养

短语:
at someone's service 所凭某人吩咐；供某人使用
call on someone's services 要求某人帮助
lip service 没有诚意的保证
take the service 开球，首先发球

普林斯顿公开课 - 人性课程节选
I'm also part of a variety of social service organizations which seek federal funding to carry out their programs.
我还参与了各类社会服务组织,它们寻求获得联邦资金以施行其计划。

servant ['sə:vənt]
a person who works in another person's house, and cooks, cleans, etc. for them:
a person who works for a company or an organization
a person or thing that is controlled by sth
n. 仆人，佣人；公务员；雇工

词组短语
civil servant 公务员；文职人员

绯闻女孩第2季第14集
They treat her like their servant.
And it is none of your business.
他们把她当成佣人了。
这不关你的事。

servile['sə:vail]
too eager to serve and please someone else in a way that shows a lack of respect for yourself:
adj. 奴隶的；奴性的；卑屈的；卑屈的

例句
His servile expression of praise for his employer was disgusting to me.
他奉承雇主的那副奴颜婢膝的嘴脸令我恶心。

servility [sə:'viləti]
n. 奴性；奴态；卑屈

serf [sə:f]
a member of a low social class in medieval times who worked on the land and was the property of the person who owned that land
n. 农奴；奴隶；被压迫者

耶鲁公开课 - 古希腊历史简介课程节选
Better to be a serf, the lowest serf on the earth, than to be a king in Hades."
在世上做一个奴隶,一个最卑贱的奴隶,也比在冥界称王要好得多"

serfdom ['sə:fdəm]
the state of being a serf or the system by which the land was farmed by serfs
social and economic system under which land was cultivated by serfs
n. 农奴境遇；农奴身份; 农奴制

耶鲁公开课 - 欧洲文明课程节选
Serfdom expands along with the Russian empire.
农奴制度随着俄帝国的扩张而扩张

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