Improve the grammaticality: The material used to make a pacemaker is silicon, titanium steel and special artificial plastic, both of them is quite friendly to patients' internal environment and will not cause injury or other diseases to humans.
The material used to make the pacemaker is silicon, titanium steel and special plastic, both of them are very friendly to human body and will not cause injury or other diseases.
The material used to make the pacemaker is silicon, titanium steel and special plastic, both of them are very friendly to human body and will not cause injury or other diseases.
The material used to make the pacemaker is silicon, titanium steel and special plastic, both of them are very friendly to human body and will not cause injury
The material used to make the pacemaker is silicon, titanium steel and special plastic.
The material used to make the pacemaker is silicon, titanium steel and special plastic.
The material used to make the pacemaker is silicon, titanium steel and special plastic.
The material used to make the pacemaker is silicon, titanium steel and special plastic.
The material used to make the pacemaker is silicon, titanium steel and special plastic.
The material used to make the pacemaker is silicon, titanium steel and special plastic