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key (A1)

カタカナ: キー

IPA: /kiː/

A small piece of shaped metal with rough edges that you use to open a lock, for example on a door or car.

意味: ドアや車などの錠を開けるために使う、ギザギザした形の小さな金属片。

I can't find my car key. — I can't find my car key.
He put the key in the lock and turned it. — He put the key in the lock and turned it.
She gave me the key to her apartment. — She gave me the key to her apartment.

Japanese translations of Key:

key to (prepositional phrase): Something that is essential for achieving something. — "Patience is the key to learning a new language."
key of (prepositional phrase): In music, the specific set of notes used. — "The song is played in the key of G."