形容词

1. 固定的;不变的
You use fixed to describe something which stays the same and does not or cannot vary.

2. (观念或看法)顽固的，固执的，一成不变的
If you say that someone has fixed ideas or opinions, you mean that they do not often change their ideas and opinions, although perhaps they should.

3. (笑容)僵硬的，呆板的,皮笑肉不笑的
If someone has a fixed smile on their face, they are smiling even though they do not feel happy or pleased.

4. 无固定住所的;居无定所的
Someone who is of no fixed address, or in British English no fixed abode, does not have a permanent place to live.