”一点都看不懂“用英语怎么说 啊 ！几种说法？谢谢！

I can't understand them at all.
I know nothing about it.
I have no knowledge of something.

"一点都看不懂"_有道翻译
翻译结果：
"Don't
understand
at
all"
understand_有道词典
understand
英
[ʌndə'stænd]
美
['ʌndɚ'stænd]
vi.
理解；懂得；熟悉
vt.
理解；懂；获悉；推断；省略
更多释义>>
[网络短语]
understand
理解,懂,明白
But
understand
但你必须了解,但你要明白,但是
understand
tacitly
心领神会

I can understand none of it.
I cannot understand it at all.