A fear of heights, the medical word used for this is vertigo.

恐高，医学术语称之为眩晕。

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LILY: Do not be afraid, I climbed the stairs to rescue you, but I tell you, I have a fear of heights ~ ~ ~.

不要怕，我爬上楼梯来救你了，不过实话告诉你，我恐高~ ~ ~。

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This might be something as seemingly logical as a fear of heights, or as illogical as a fear of the colour green.

这种恐惧感有的时候看起来是符合逻辑如恐高症，或就像绿色恐惧症一样不符合逻辑的。

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