- We must transfer all active factor.
- We often say that man is the most active factor of productive force.
- The Marxist consider the human as the most active factor in prolificacy .
- Principal constituent: Andrographis Paniculta lactone, clove oil and many kinds of sterilizations active factor.
- Grain ovules contain several organic active factors, they are very good for one's health.
- It will produce a couple of active factors, which let them have a similarly word with their friends.