都是表"种类"
前者为“一种.”
后者为“某种.”
注意：some + 单数可数名词是相当于 a certain "某一“
Can I see it as a test of some kind?
我能否视之为某种测验?".
They felt some kind of disaster was hanging over them.
他们感到某种灾难就要临头.