involve
vt.使涉入
The evidence shows that Paul is involved in that murder.
证据显示保罗涉入那起谋杀案。
involvement
n.牵涉（不可数）
Employee involvement is a big step for the company.
员工投入是这家公司的一大进展。
community
n.社区；界，共同利益团体
I live in a small community outside the city.
我住在城外的一个小社区里。
The medical community is sparing no effort to promote human health.
医学界正不遗余力提升人类的健康。
information
n.消息，资料（不可数，有时缩写成 info）
Thank you for giving us all the information we need.
谢谢你提供我们一切想要的资讯。
John is a mine of information about music.
约翰是个音乐通。
informative
a.有内容的；能增进知识的
Mr. Johnson's speech was quite informative.
强森先生的演讲颇有内容。
Tom found the television program quite informative.
汤姆发现这个电视节目蛮具教育性的。
economy
n.经济；节俭
The economy of this country seems to be improving.
这个国家的经济似乎正在好转。
Several decisions about the economy were made in order to save money.
为了节省开支，因此做了许多省钱的决定。
economic
a.与经济有关的
Mary's economic problems started when she got divorced.
玛丽离婚时，经济方面的问题就产生了。
economical
a.合乎经济效益的，节省的
It's more economical to buy food in large quantities.
大量购买食物比较划算。
economically
adv.合乎经济效益地
We must use this limited space economically.
我们要有效地使用这个有限的空间。
economics
n.经济学
I majored in economics while I was in college.
我念大学时主修经济学。