the first question is to identify

第一个问题是
what's the public health goal that you're seeking to achieve?

你们所要达到的公共卫生成就是什么
You need to keep that public health goal in mind.

你们要在脑海里牢记这个目标
I think that what we're talking about,

我想我们所讨论的
other than the guns and the other examples I've given you,

除了枪支和其它我给你们的例子外
is that we're talking about reducing the incidence

我们所说的是较少孩童肥胖的
and the severity of childhood obesity.

发生率和严重性
It's important to keep your public health goal in mind,

牢记你们的公共卫生目标很重要
because you can get pulled away

因为你会被
into political goals or other types of goals

政治目标或者其他目标所影响
that may not lead you to the same place as your public health goal.

结果与原本的公共卫生目标渐行渐远
It's--also to keep in mind that if we are public health people,

还有一点要牢记研究公共卫生的人