Even a perm has its term.是什么意思？

Even a perm has its term.

电烫的头发也有变直的时候.

even

adv. 甚至，更加， 即使，恰巧在…时候；adj. 公平的，平坦的， 偶数的，平均的；vt. 使平坦，使相等；vi. 变平，成为相等；

例句
In his later life he became even more absent-minded.
他晚年变得愈加健忘了。

perm

n. 电烫发；vt. 烫发；

例句
I want to perm my hair very curly like corkscrew curls.
我想要烫得卷,像有许多螺旋般.

has

v. 有( have的第三人称单数 )，（亲属关系中）接受，拿，买到；

例句
...the operation a patient has had.
病人做过的手术

its

pron. (it的所有格形式)它的，厥；

例句
The government is to accelerate its privatisation programme.
政府将加快其私有化计划的进程。

term

n. 学期，条款，术语，期限；vt. 把…称为，把…叫做；

例句
What a crazy scheme, and I use that term advisedly.
这是个多么疯狂的计划，我用了那个词是斟酌过的。