“我是一个被遗弃的小孩” 翻译成英语

I'm an abandoned child.
I'm an abandoned boy/girl.
男孩就是boy,女孩就用girl啦

I am a abandoned child.

I am an outcast child

I am lost

I am a child who has been abandoned/deserted
或者直接说I am a child abandoned/deserted abandoned/deserted作后置定语比前置定语要好一些

I am an unwanted child.

I am an abandoned child.