There are huge clusters of organic waste they can feed on, said Flack.
出自-2017年6月阅读原文
Countries with the highest scores tend to be clustered in the West, where gender discrimination is against the law, and equal rights are constitutionally enshrined(神圣化).
出自-2013年12月阅读原文
柯林斯高阶英汉双解学习词典释义
N-COUNT
(人或物的)组,群,簇
A cluster of people or things is a small group of them close together.