Western banks still lag behind financial institutions in most other regions of the country.

西部地区的银行仍然落后于这个国家其他大部分地区的金融机构。

We must achieve modernization of science and technology, otherwise we will lag behind other nations.

我们必须实现科学技术的现代化，否则我们就会落后于其他国家。

Be modest and prudent, never lag behind!

谦虚谨慎，永不落后！

Be modest, otherwise you will lag behind.

要谦虚，否则就要落后。

Modesty helps one to go forward [make progress]; conceit makes one lag behind.

虚心使人进步， 骄傲使人落后。