他出生于世纪之交。

He was born at ___the ___turn ___of ___the ___century.

许多突破性技术在世纪之交涌现。

Many groundbreaking technologies emerged at ___the ___turn ___of ___the ___century.

我们的家庭故事始于世纪之交，当时我的祖父移民至此。

Our family story begins at ___the ___turn ___of ___the ___century, when my grandfather immigrated.