He was oblivious of what was happening.

他已经忘却发生什么事了。

For a person who has known them so long you are strangely oblivious to their faults.

对于一个认识他们很久的人来说，你异乎寻常地没有意识到他们的缺点。

She was oblivious to our warnings.

她忘了我们的提醒。

At the edge of a sprawling grassland, a pair of hoofed grazers resembling horses, an antelopelike notoungulate and a ground sloth feed quietly, oblivious to their impending doom.

在辽阔原的边缘，有一对貌似马儿的有食动物、一只很像羚羊的南方有类和一只地獭正在静静觅食，没有注意到大祸即将临头。