a big number of的用法和样例：
- Every year a big number of native English speakers from USA,Canada,GB,etc.teach oral English in PCCC.
- I didn't get the number of the car that knocked you over. It was gone in a flash. All I know is that it's a big, brown car.
- Mr.Ambassador: A big number of students now are studying in Switzerland.Many of them are in private schools,especially in the hotel management schools,because Swiss hotel management schools are well known all over the world.
- Company Starlight Gem Manufacture Co. Ltd. is a "MANUFACTURING" company and has its own stone cutting factory of cubic-zirconia and synthetic stones occupying a big number of skilled workers..
- Trained a big number of professional people,