他在这方面的知识非常渊深的英文

his knowledge about the subject is very profound

• 他:    he
• 在这方面:    in this respectⅣ a ...
• 的:    4次方是 The fourth po ...
• 知识:    knowledge; know-ho ...
• 非常:    extraordinary; unu ...
• 渊深:    profound; deep; er ...