pigment['piɡmənt] pig=pic picture
a substance that exists naturally in people, animals and plants and gives their skin, leaves, etc. a particular colour:
n. [生化] 色素；颜料

例句
This pigment is a good common food additive.
该色素是稳定性好的食品添加剂。

planar['pleinə] plain
1 : of, relating to, or lying in a plane
2 : two-dimensional in quality
adj. 平面的；二维的；平坦的

麻省理工公开课 - 计算机科学及编程导论课程节选
So an easy thing to do in planar geometry is I want to make a line segment.
在平面几何里比较容易的一件事,就是做一个线段。

municipal [mju:'nisipəl] mun+i+cip accept
市,买卖之所也。——《说文》
mun彼此、相互
communicate交流思想、信息；交际，交往；联络，联系；通讯；通话
immune不受影响的;免疫的；免于……的，免除的

connected with or belonging to a town, city or district that has its own local government
adj. 市政的，市的；地方自治的

例句
He is in charge of the municipal housing project.
他主管该市建房计划。

耶鲁公开课 - 欧洲文明课程节选
So, what happens with municipal privileges, towns that had municipal privileges, these are eroded and then virtually eliminated by powerful potentates.

地方特权怎么样了,拥有地方特权的城镇又发生了什么,绝对统治者削弱并最终废除了地方特权。

manipulate[mə'nipjuleit] manual手工的；手册 man在...就位;操纵 pul=pull
~ (sb into sth / into doing sth) (disapproving) to control or influence sb/sth, often in a dishonest way so that they do not realize it
to control or use sth in a skilful way:
(technical) to move a person's bones or joints into the correct position
manipulation noun
vt. 操纵；操作；巧妙地处理；篡改

例句
Do you know how to manipulate a computer ?
你知道怎样操作计算机吗?
He is a clever man who knows how to manipulate public opinion.
他是一个善于操纵舆论的聪明人。
The treasurer was arrested for trying to manipulate the company's accounts.
这个会计因企图篡改公司账目而被捕。

绯闻女孩第3季第6集
The people you manipulate... I know how little respect you have for them.
But not you. I don't feel that way about you.

被你玩弄的那些人。,我知道，你根本从未尊重过他们。
但不是对你，我从未那样对你。