艾米的妹妹正在干什么？她正在海里游泳。 速度的说 用英语怎么说？

What is Amy's sister doing? She is swimming in the sea.

其实呢

百度有自动翻译的产品的

http://dict.baidu.com/

What is Amy's younger sister doing? She is swimming in the sea.

What is Amy's younger sister doing?
She is swimming in the sea

What is Amy's younger sister doing? She is swimming in the sea.