secret

祕密

She promised to keep my secret and never told anyone.

她答應為我保守祕密，從來沒告訴任何人。

機密多指官方或商業

He was accused of selling state secrets to a foreign government.

他被控將國家機密賣給外國政府。

祕訣、訣竅

The secret of good bread is patience and a hot oven.

做出好麵包的祕訣在於耐心和夠熱的烤箱。

祕密的、暗中的

The two sides held secret talks in a hotel basement.

雙方在飯店地下室進行祕密會談。

機密的

These documents are secret and cannot leave the building.

這些文件屬於機密，不得帶離大樓。