“不知天之高”是一句古代汉语成语，出自《庄子·逍遥游》。这句话的意思是指人们无法了解天空的高度，也可以理解为人们无法预测未来的发展和变化。
在翻译这句成语时，可以根据上下文和语境来选择合适的表达方式，以传达原文的意思和情感。以下是一些可能的翻译方式：
Literal translation: "不知天之高" can be translated literally as "not knowing the height of the sky". This translation captures the imagery of the original text but may not fully convey the deeper meaning.
Interpretative translation: A more interpretative translation could be "The unknowable heights of the heavens". This translation emphasizes the idea of the unknown and the mysterious nature of the sky.
Contextual translation: Depending on the context in which the phrase is used, the translation may vary. For example, in a philosophical or poetic context, it could be translated as "The unknowable heights of destiny".
翻译这句成语需要考虑原文的意义、情感和语境，选择合适的表达方式来传达作者的意图。在翻译过程中，可以灵活运用不同的翻译技巧和方法，以确保译文准确、流畅地传达原文的内涵。
