backward 落后

This part of the country is still backward.
这个国家的这个地区仍很落后。

Texas is a backward state in America.
得克萨斯在美国是一个落后的州。

The backward areas shouId catch up with the advanced.
后进地区应该赶上先进地区。

Their policy of bullying backward countries has not changed.
发达国家欺侮落后国家的政策没有变。

China may be backward in economic and cultural development, but it is not necessarily backward in everything.
中国在经济上文化上落后，并不是一切都落后