我瞎写的英语怎么说

I wrote that groundlessly
groundlessly 表示毫无根据地
意思就是我胡乱写，瞎写

我瞎写的
I just wrote it at random.

at random = 很任意、随便地

I make up the English sentence.heheh

make up 有很多意思.如:化装,打扮,讲和等等...
其中也有"编造"的意思.如:
Tom makes up stories to amuse his little brother.
汤姆编故事逗他的小弟弟。

I write it without thinking.