大陆桥

shí shī xī bù dà kāi fā yào yī tuō yà ōu dà lù qiáo shang de jiāo tōng gàn xiàn

实施西部大开发，要依托亚欧大陆桥上的交通干线。

Development in western regions must depend on the Eurasian Continental Bridge and other transport routes.

hěn jiǔ zhī qián rén men yuè guò le lián jiē yà zhōu hé běi měi zhōu de dà lù qiáo

很久之前，人们越过了连接亚洲和北美洲的大陆桥。

Thousands of years ago, people crossed the land bridge between Asia and North America.