english meaning ???

Drug - A substance, usually a chemical substance, used in the diagnosis, treatment, or prevention of a disease or as a component of a medication. Any substance used in medicine.
Consent - permission, acceptance or approval of what is planned or done by another.
voluntary - Done or undertaken of one's own free will; capable of making choices; having the faculty of will
Confidential - secret
Privacy - the quality or condition of being secluded from the presence or view of others; the state of being concealed; secrecy

1)毒品，麻醉藥
2)同意；准許；允許
3)自願的；志願的；主動的；自告奮勇的
4)機密的；保密的；秘密的
5)隱私；私密
以上字的英文解釋。=)