1. The big losers will be the undeveloped countries, especially in sub-Saharan Africa. 最大的损失者将为不发达国家，特别是撒哈拉以南的非洲国家。
2. There are many people whose cultures are undeveloped, but the languages they speak are by no means primitive. 有许多人他们的文化不发达，但他们说的语言绝不是原始的。
3. The reason often given for the low regard in which smell is held is that, in comparison with its importance among animals, the human sense of smell is feeble and undeveloped. 人们通常不重视嗅觉的原因是，虽然嗅觉对于动物很重要，但人类的嗅觉是薄弱而不发达的。
4. Vast tracts of the country are wild and undeveloped. 这个国家有大片荒芜未开发的土地。
5. Some villages in the world still suffer from problems such as poor road conditions, shabby toilets, dirty environment, and undeveloped basic public services. 世界上的一些农村仍遭受着很多问题，如糟糕的道路条件，破旧的厕所，肮脏的环境，以及发展不完善的公共基础服务等。
