可知 (kě zhī) is a classical Chinese-derived expression meaning 'it can be known' or 'evidently', used in formal, literary, or expository contexts. It functions both as an adjective meaning 'knowable' and as an adverb meaning 'evidently, obviously' (often in the pattern 由此可知 'from this it can be seen that'). Note: the source pinyin lists only 'kě', but the full two-character headword is pronounced 'kě zhī'.