be concerned about怎么读,中文斜音

be concerned about怎么读,中文斜音 be concerned about造句 关于be concerned about be concerned about concern about be concerned about 中的concerned是什么词性? 英语翻译用(be concerned about) 用户be concerned about 造句 类似be concerned about的 用Be concerned about造句 be concerned with/about/for be concerned about 与 be concerned with 的不同. be concerned about与be concerned with 区别