the key

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the key — 名詞

1. a small piece of metal used to open a lock

1.名詞
釋義

鑰匙

a small piece of metal used to open a lock

例句

I need to find my car key.

2. something that is very important or essential

2.名詞
釋義

關鍵

something that is very important or essential

例句

Hard work is the key to success.

the key — 形容詞