what is the difference between "include" and "involve"?

include
bring in,reckon,as part of the whole
一般作包括、包含讲,如：
The package cost is included in the total price of equipments.包装费用包括在设备总价格之内.
involve
involve (in)
cause (sb.or sth.) to be caught or mixed up (in trouble,etc); get sb.or sth.into a complicated difficult condition;
have as a necessary consequence
一般可理解为使.卷入,使.陷于某种状态或麻烦之中；还可以理解为涉及或包含某种必然结果
例如：
They are deeply involved in debts.
他们债台高筑.
More than 30 software firms were involved in the project.
30多家软件公司参与了这个项目.
The war involved a great increase in the national debt.
战争使得国债大为增加.
上说说明希望对你由所帮助

include 指包括属于整体的部分
involve 指必然包括某种结果

Include 表示包括,相当于数学上的包含于
involve 表示卷入(一般为不好的事情)

include 是包括什么东西。 include + n(直接加） include sb
involve 是卷入 involve in

include动词 一般用主动形式
involve 一般用be involved in

include 用作全部包括在内
但involve 设计及卷入到的什么事或是其他，也有包括之意，用作包含什么含义或是引进了技术！！
involve这个词比较灵活！！！

include - 包括
involve - 一般可以理解成为"卷入"