会集用英语怎么说？

会集

例句

• This once important social group is becoming more and more marginal. 这个一度十分重要的社会集团越来越无足轻重了。
• Their talks are expected to focus on arms control. 他们的会谈预计会集中讨论军备控制问题。
• They are gregarious birds and feed in flocks. 它们是群居鸟类，会集群觅食。
• The trade union block vote is an excrescence on democracy. 工会集团投票制是民主的毒瘤。
• Their talks are expected to focus on arms control... 他们的会谈预计会集中讨论军备控制问题。