新しいクラウンをかぶせる必要があります。

new; novel; fresh; recent; latest; up-to-date; modern

crown; clown

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 cover (with something); to put on (e.g. on someone else's head); to plate something (with a metal); to pour or dash a liquid (on something); to charge (a person with a guilt)

necessary; needed; essential; indispensable; necessity; need; requirement

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

to be (usu. of inanimate objects); to exist; to live; to have; to be located; to be equipped with; to happen; to come about