中文翻译成英语!急求他跑的比我快两倍.fast在内战之前的美国,黑人是被瞧不起的.look他们在街上一边走着,一边谈着笑

他跑的比我快两倍.fast
He runs twice as fast as I do
在内战之前的美国,黑人是被瞧不起的.look
In the United States where the civil war didn't happen, the black people were looked down upon
他们在街上一边走着,一边谈着笑着laugh
They walk on the street, talking and laughing
老师手里拿着一本书走进教室with
The teacher walks into the classroom with a book
他讲起话来好像是一个专家expert
When speaking, he looks as if an expert(he seems like an expert)
他很少和妻子一道购物go
He seldom go shopping with his wife