a deterrent effect的用法和样例：
- Apart from grazing, trampling also has a deterrent effect upon weeds at this stage.
- The police said the recent convictions and custodial sentence imposed on I.T. criminals had achieved a deterrent effect.
- An increase in the number of operations and the drop in arrestees indicate a deterrent effect on illegal workers, resulting in a decrease in the number of illegal workers.
- His punishment will be a deterrent to others.
- His punishment will is a deterrent to others.