当我在睡觉时,一架UFO登陆在我家门口,用英语翻译下
问题描述:
当我在睡觉时,一架UFO登陆在我家门口,用英语翻译下
答
When I was sleeping, an UFO landed in front of my house.
答
When I was sleeping, a UFO landed in front of my house.
答
While I was sleeping,an UFO landed at my home .