... fill up a gap 填补空白(补缺)... fill up 装满(填写 fill up the gap弥合差距 ...
双语例句
1
It was left to Darwin to fillupthegap that I left.
我留下的这个空白由达尔文进行了填补。
2
Even though Mexico's oil production drops to some extent in a certain period due to some human factors, Canada will fillupthegap left by Mexico in oil supply to the United States.