doping

中文： 兴奋剂

1. The use of drugs to improve athletic performance. (countable, uncountable)
2. The addition of small quantities of an element (a dopant) to a semiconductor to change its characteristics. (countable, uncountable)
3. The applying of dope to a substrate such as airplane fabric, or the coating thus produced. (countable, uncountable)

复数 dopings