你好,为你
标准答案不可信,详见：【fill in】【fill up】两者的使用区别
【fill in】
1.填写
Fill in the blanks with suitable words.
在空格里填上适当的字.
2.填平
The ruts must be filled in so that traffic can pass.
车轮压出的辙迹必须填平,以便行人车辆通行.
3.代替
Steve is ill. Can you fill in for him?
史蒂夫病了,你能代替他吗?
4.补充
I've written the skeleton of my report, but I have to fill in the details.
我已写出报告的梗概,但我必须补充细节.
【fill up】
1.填好
Fill up the form according to the instruction.
按照说明将表填好.
2.填满
The classroom was filled up with students.
教室里坐满了学生.
3.装满
He has filled up the tank with gas.
他已给油箱装满了汽油.
4.被填满
The ditch filled up with mud.
沟渠为泥所淤塞.
希望帮助到你!