Unsolicited: not asked for and sometimes not wanted 未经要求的;自发的;自我推荐的 adjective
unsolicited comments/criticism/advice
主动作出的评论/批评/忠告
The record company receives dozens of unsolicited demo tapes each week.
唱片公司每周收到数十盘自我推荐的试唱磁带。
Reluntant: hesitating before doing something because you do not want to do it or because you are not sure that it is the right thing to do 不情愿的;勉强的
reluctant agreement/support
勉强同意/支持
She was reluctant to admit she was wrong.
她不愿承认自己有错。
He finally gave a reluctant smile.
他最后露出了一丝无可奈何的微笑。
a reluctant hero(= a person who does not want to be called a hero)
不情愿做英雄的英雄