He is an incredibly clever, literate musician, but he always makes it sound terribly simple.

他是一个聪明有修养的音乐家，但总是让人听起来觉得特别简单。

youdao

I know about much more people and am dealing with much more relationship that seems simple but terribly hard to do well.

我认识了很多人，也要处理那些看起来简单，实则深奥的人际关系。

youdao

Fortunately they're written in very simple English style and not terribly long.

幸运的是,这些书都不长，语言也很简单。

麻省理工公开课 - 电影哲学课程节选

It all sounds terribly simple to me.

FORBES: Keynes the Way Keynes Said We Should Do Keynes