面對未知的未來，他感到了深深的恐懼。
Facing an unknown future, he felt a deep sense of fear.
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Example sentences
宇宙中還有許多未知的領域等待人類去探索。
宇宙中还有许多未知的领域等待人类去探索。
There are still many unknown areas in the universe waiting for humans to explore.
面對未知的挑戰，我們應該無所畏懼地向前邁進。
Facing unknown challenges, we should move forward fearlessly.
Usage Notes
Indicates something that is not yet known or identified.
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