Definition: less developed or slower to develop than normal Level: C2
一些地区在经济上仍然落后。
Some regions remain economically ___backward.
这个国家从一个落后的农业社会转变为一个工业强国。
The nation transformed from a ___backward agricultural society into an industrial power.
孤立主义政策使得该地区在技术上落后。
Isolationist policies left the region technologically ___backward.
