our daily lives, so different from those of our ancestors与我们祖先的生活大为不同的我们的日常生活

He could trace his ancestors back 700 years.他的祖先可以追溯到700年以前。

The direct ancestor of the modern cat was the Kaffir cat of ancient Egypt.现代猫的直系原种是古埃及的卡菲尔猫。

The immediate ancestor of rock 'n' roll is rhythm-and-blues.摇滚乐直接源自节奏布鲁斯。