将以下段落的语法错误修正并重新排版：
“Journalist writng for newpaper or magazine are challenged by deadline and word limit, which mean they need to work quickly and efficiently. Many journalist are trained to write quickly and accurately, and they pratice this skill in their careers.”
Journalists writing for newspapers or magazines are challenged by deadlines and word limits, which means they need to work quickly and efficiently. Many journalists are trained to write quickly and accurately and they practice this skill in their careers.