awhat is and shat it is used for 什么是,并且shat它是半新为[translate] aThe boy was too young to go to school 男孩太年轻的以至于不能去学校[translate] aabmormal operating conditions abmormal操作条件[translate] a这样有利于两国学生们的交流 Like this is advantageous to both countries student exc...