I am not strong enough，nor brave enough，to go out into the wide，strange，difficult world alone.

请问把前面两个逗号去掉可以吗？即I am not strong enough nor brave enough to go out into the wide，strange，difficult world alone.

还有类似几个形容词用逗号隔开the wide，strange，difficult world 的用法在四六级考试的写作中可以这样用吗？