His accent proclaimed that he was an American.
他的口音表明他是一个美国人。
He speaks English as though he were an American.
他讲起英语来好像他是个美国人。
The bill was drawn on an american bank .
票据是一家美国银行支付的。
My american friends have been working on me .
我的美国朋友们教会了我。
A new spirit entered american fiction .
一种新精神注入了美国小说。