He's a straightforward man and told everything he'd seen.

他是个直性子把看到的事儿都捅出来了。

《新英汉大辞典》

I am quite a straightforward man.

我是一个非常直率的人。

youdao

I'm a blunt straightforward man; I hate sham.

我是个耿直坦率的人，我讨厌虚伪。

youdao

In person Sir Ranulph comes across as a strikingly modest, canny and straightforward man - reluctant to dwell on his own frustrations - 50% of all his past expeditions had failed, he pointed out.

BBC: Sir Ranulph Fiennes: Diabetes link to Antarctica injury

He's a very straightforward man.

BBC: Jack Straw MP. photo courtesy Jeff Overs

The sheer intricacy of the Virgin empire sits oddly beside Mr Branson's image as a straightforward, open sort of man.

ECONOMIST: Behind Branson