and they-I'm not going to spend a long time going through these

我并不打算花太多时间赘述
but what they try to capture,

这些内容如果
in somewhat more formal language,

用正式语言来概括的话
are those three things that I had on the previous slide:

就是前张幻灯片上的三个要点
a refusal to maintain body weight at

如果在特定的年龄和身高下
or above minimally normal weight for age and height--

拒绝保持或高于最小正常体重
so they're underweight by definition;

并仍伴随着对
accompanied by an intense fear of gaining weight

增重或变胖的极度恐惧
or becoming fat even though they're skinny;

则被定义为体重不足
criterion is the most awkward, at least in terms of language,

"标准"一词就语言上来说其实并不贴切
the short hand is distortion of body image.

它的缺点在于并不能很好地描绘人体形态
What often happens--

这经常发生是...