Senses
当然/ 當然 of course
certainly; without doubt; used to express strong affirmation
当然/ 當然 to be sure
Used at the start of a sentence or clause to add a qualification or extra information, often functioning like a parenthetical remark.
当然/ 當然 natural
as it should be; only natural; proper
当然/ 當然 by right
Describes a status that is automatic, held by right of office, or held without need for further action like an election.