我想我没那么坚强，不过是一而再的逞强。

I think I'm not so strong, but time and again.

我承认我没那么坚强，只是一而再的逞强。

I admit that I was not so strong, but again and try to be brave.

作为补充说明，我应该再加一点，他表现得过于逞强。

As a footnote, I should add that there was one point on which his bravado was more than justified.

国际绿诺科技在这里以大连为基址，制造工业污染控制系统，它的高管们拒绝对此发表评论，逞强说这是正常商业行为。

Executives at Rino International, which is based here in Dalian and makes industrial pollution control systems, declined to comment, beyond saying that it is conducting business as usual.