grandfather

祖父、爺爺、外公

My grandfather still rides his bicycle to the market every morning.

我爺爺每天早上還是騎腳踏車去市場。

始祖、開創者、鼻祖

He is widely regarded as the grandfather of modern electronic music.

他普遍被視為現代電子音樂的鼻祖。

祖先、先人舊式，常用複數

Our grandfathers cleared this land and built the first village here.

我們的先人開墾了這片土地，並在此建立了第一個村落。

使不受新規定限制美式，常用被動

Existing tenants were grandfathered in under the old rental rates.

原有房客依舊適用舊的租金標準，不受新規定限制。