big machinery teaching idea的用法和样例：
- I saw no big machinery at any of the factories I visited.
- In agriculture, with conditions as they are in our country, co-operation must precede the use of big machinery (in capitalist countries agriculture develops capitalistically).
- "I can remember riding along in this car on the bottom of the canal, a lot of big machinery and a lot of trains going up and down taking the 3)diggings out.
- Methods Guided by the modern teaching idea we adopted enlightened and investigated methods in learning .
- Aiming at the problems during the graded teaching in ELU,by investigating and analyzing,puts forward the graded teaching idea of individuation and people oriented.