Fire proves gold, adversity proves men.是什么意思？

Fire proves gold, adversity proves men.

烈火显真金,逆境识英雄。

fire

n. 火，燃烧物，火灾，射击，发射，热情；vt.& vi. 开火，射击，燃烧，引爆炸药，充满热情；vt. <口>解雇，射（箭），激励，射出（子弹）；

例句
...weapons that could fire with accuracy at targets 3,000 yards away...
能准确无误地击中3,000码以外目标的武器

proves

v. 证明( prove的第三人称单数 )，检验，试

例句
It is for this reason that television proves such a boon to so many people...
就是因为这个原因，电视才会给这么多人带来如此大的便利。

gold

n. 金，黄金，金色，金币，金饰品；adj. 金（制）的，含金的，金色的，金本位的；

例句
We used shades of gold and green to give the room a fresh, autumnal look.
我们用金色和绿色的色调为房间平添了一种清爽的秋日感觉。

adversity

n. 逆境，不幸，灾难；

例句
I always turn adversity and defeat into victories, but it's probably put ten years on me.
我总是能够扭转逆境，反败为胜，但这可能让我显得老成了10岁。

men

n. 人( man的名词复数 )，人类，男人，男子汉；

例句
Many men still have difficulty accepting a woman as a business partner...
许多男性仍然无法接受女性商业伙伴。