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 固定的;不变的 You use fixed to describe something which stays the same and does not or cannot vary.
They issue a fixed number of shares that trade publicly...
...a world without fixed laws...
ADJ-GRADED (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.
...people who have fixed ideas about things.
ADJ (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.
I had to go through the rest of the evening with a fixed smile on my face.
PHRASE 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.
They are not able to get a job interview because they have no fixed address...
He's of no fixed abode and we found him on the streets.