翻译英语“不知道这些牛肉是不是真的从美国来的，我希望不会有疯牛病，你敢不敢吃”

I don't know whether these are from America,I hope it won't make me cow disease,do you dare to it.
楼上第一个句子没主语，明显错的。即时做祈使句，也不能这么做。

Don't konw if these beefs are really from America, I hope it doesn't have mad cow disease, do you dare to eat?

I have no idea whether these beefs come from the US,and hope they didn't infected by mouth and foot disease.but I was wondered that you if you dare to eat these.