grandfather

祖父、爷爷、外公

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

我爷爷每天早上还是骑脚踏车去市场。

始祖、开创者、鼻祖

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

他普遍被视为现代电子音乐的鼻祖。

祖先、先人旧式，常用复数

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

我们的先人开垦了这片土地，并在此建立了第一个村落。

使不受新规定限制美式，常用被动

Existing tenants were grandfathered in under the old rental rates.

原有房客依旧适用旧的租金标准，不受新规定限制。