But the progress has been uneven, (particularly in Africa, least developed countries, landlocked developing countries, and small island developing States)。请问括号内的内容属于句子的什么成分?地点状语吗?用法是如何?谢谢。
... just a bite and no more effort needed. In fact, it would be an assistance to all carnivores though it would be a two-edged weapon when they fought each other.参考译文:为什么只有蛇才有毒液呢?譬如说,如果猫有毒液,那对猫会大有帮助,它就不必再和又大又凶...