vein

A rich vein of iron ore was found in the hillside.

山坡上发现了储量丰富的铁矿矿脉。

A vein of satirical anger runs through all his work.

在他的所有作品中，字里行间都充满了嬉笑怒骂。

The opening scene is very violent, and the rest of the movie continues in (a) similar vein.

影片一开场就充满暴力，而其余部分也是类似风格。