translation.en: So if you want to understand the action of drugs, you want to understand how they're acting in the ways you want them to, and also in the ways you don't want them to.
translation.zh: 如果你想去理解药物的行动， 你想要理解它们有没有按照你想要它们行动的方式 和不想让它们行动的方式运行。