apparition|apparitions

他在古老的城堡里瞥见一个模糊的幽灵身影。

He caught a glimpse of a faint ___apparition in the old castle.

黑暗中突然出现的白色身影把我们吓了一跳。

The white ___apparitions appearing suddenly in the dark scared us.

午夜时分，一个白色的身影突然出现在走廊尽头，真是个奇怪的景象。

At midnight, a white figure suddenly appeared at the end of the hallway—what a strange ___apparition.