自2010年至今的四级考试中， 共出现过 次
自2010年至今的六级考试中， 共出现过 次
ADJ 永久的；永恒的 Something that is permanent lasts for ever.
Heavy drinking can cause permanent damage to the brain...
...a permanent solution to the problem...
ADJ （尤指问题或困难）不断出现的，一直存在的 You use permanent to describe situations or states that keep occurring or which seem to exist all the time; used especially to describe problems or difficulties.
...a permanent state of tension...
They feel under permanent threat...
ADJ （员工）终生的,长期的 A permanent employee is one who is employed for an unlimited length of time.
At the end of the probationary period you will become a permanent employee.
...a permanent job.
ADJ （家庭住址）固定的 Your permanent home or your permanent address is the one at which you spend most of your time or the one that you return to after having stayed in other places.
York Cottage was as near to a permanent home as the children knew...
They had no permanent address.
N-COUNT 卷发；烫发 A permanent is a treatment where a hair stylist curls your hair and treats it with a chemical so that it stays curly for several months.