filling
n
1 [C] (process of putting in) material used to fill a hole in a tooth (补牙洞的)填料; 补牙
I had to have two fillings at the dentist's today. 我今天要请牙医给我补两颗牙.
2 [C, U] food put between slices of bread to make a sandwich, or between layers of cake, etc 馅
a sponge cake with jam filling 果酱馅饼.
On the subject of reading, Francis Bacon, who lived at about the same time as shakespeare, wrote these words, Some books are to be tasted, others to be swallowed, and some few to be chewed and digested. This good advice shows how it is possible to read