It's umbilicated as well.

也是脐状的
The process of what's called vesiculation,

这个过程就是水疱形成
the rise of this stage of the rash,

疹的这个阶段的产生
takes about three days and

需要花大约三天时间并且
lasts a further three.

持续另外三天
It's at this stage that the physical diagnosis of smallpox

天花的物理诊断在这个阶段
becomes reliable, with the disease presenting its

变得可靠伴随着疾病展现出它的
most distinctive appearance.

最突出的表现
The patient experiences

病人渐渐地
increasing difficulty in swallowing and in talking,

吞咽和说话困难
due to extensive lesions in the mucous membranes in the palate and the throat.

因为腭和喉的粘膜大范围的损害
And there's a child at this stage of the disease.

有一个小孩得了这个病