学べないほど年を取った人はいない。

degree; extent; bounds; limit; indicates approx. amount or maximum; upper limit

year; many years; age; past one's prime; old age

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

to take; to pick up; to harvest; to earn; to win; to choose; to steal; to eat; to have (a meal); to remove (one's glasses, etc.); to compete (in sumo, cards, etc.); to play

man; person; human being; mankind; people; human (Homo sapiens); humans as a species; character; personality; man of talent; true man; another person; other people; others; adult

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

to need; to want