逐滴加法

morphine addiction───吗啡瘾；慢性吗啡中毒

cocaine addiction───可卡因成瘾

promise action───承诺行动

morphine addictions───吗啡瘾；慢性吗啡中毒

booze addiction───酒瘾

drug addiction───药物成瘾

heroin addiction───白粉毒瘾；海洛因成瘾

After cooling, the excess hydride was destroyed by the dropwise addition of IPA.───冷却后，用外加物异丙醇滴定多余的氢化物。