纪录片《药物依赖》 第24期：是药三分毒

The discovery of undesired effects is, however,

然而 药物出现不理想的作用

intrinsic to the experimental nature of medicine.

也是源于药物试验性的本质

Clinical trials are done on thousands of people,

临床试验在几千人身上进行

but some side effects are only found

然而有些副作用

when hundreds of thousands take them,

只有上百万的人服用以后

when the drug comes to the market.

也就是药物进入市场之后才会被发现

You might start picking up side effects

你可能会出现一些副作用

that you couldn't have anticipated,

可能是一些意料之外的

that you didn't know, that are relatively¹ rare

你不了解的 很罕见的副作用

but nonetheless can sometimes be important.

却有可能很重要

Drug development is an ongoing² clinical trial

药物发展就是在不断的进行临床试验

in which we all play a part.

我们都是试验的一份子

There's no such thing as a totally safe medicine.

是药三分毒

There's no such thing as a

根本没有一种药物

medicine that we know absolutely everything about

我们能了解它的一切

and therefore there is some uncertainty³, and that persists.

因此有一些不确定因素 且将持续存在

Because this goes to the heart of what medicines are.

因为这源于药物的本质

When you make a medicine,

你在制造药物的过程

you're trying to disrupt a fundamental biological process.

你要试图打乱基本的生物进程

That's a pretty profound change.

这是个复杂的变化

1 relatively   

adv.比较...地，相对地

参考例句：

• The rabbit is a relatively recent introduction in Australia.兔子是相对较新引入澳大利亚的物种。
• The operation was relatively painless.手术相对来说不痛。

2 ongoing   

adj.进行中的，前进的

参考例句：

• The problem is ongoing.这个问题尚未解决。
• The issues raised in the report relate directly to Age Concern's ongoing work in this area.报告中提出的问题与“关心老人”组织在这方面正在做的工作有直接的关系。

3 uncertainty   

n.易变，靠不住，不确知，不确定的事物

参考例句：

• Her comments will add to the uncertainty of the situation.她的批评将会使局势更加不稳定。
• After six weeks of uncertainty,the strain was beginning to take its toll.6个星期的忐忑不安后，压力开始产生影响了。