His facial features were transfigured. Gleaming with dark fire, his eyes had shrunk beneath his frowning brow.

他的面容完全变了。他的眼睛闪着阴沉的火光，从紧促的睫毛中露出来。

Whenever he encountered the captain, his eyes would flicker with dark fire, and I was in constant dread that his natural vehemence would cause him to do something rash.

当他碰见船长的时候，他的眼睛燃起阴沉可怕的火光，我时常害怕他那暴烈天性可能使他走极端。