a group of

• Such a group of formation is briefly referred to as a transformation group .
  这样一个变换的群，称为变换群。
• A "plantation" is a group of blocks planted close to each other .
  “栽植点”是彼此紧密栽植在一起的一群区组。
• Histones are a group of proteins that are associated with chromosomes .
  组蛋白是一类结合在染色体上的蛋白质。
• This belt is bounded on the north by a group of large plutonic masses .
  该带的北部被一群大规模的深成岩体所限。
• At every moment a group of men involved themselves in uproarious horse-play .
  时时有一群人闹着恶作剧，闹成一片。
• The star turn in our show tonight will be a group of chinese acrobats .
  我们今天晚上节目中最精彩的是中国杂技表演。
• Hamilton then recruited a group of effective regional directors .
  汉密尔顿又罗致了一批精干的负责各地区的主管官员。
• A group of volcanic vents will produce a lava of the same mineral composition .
  一群火山口将产生相同矿物成份的熔岩。
• Tanya livingston was talking animatedly with a group of passengers .
  坦妮亚利文斯顿谈笑风生地和一群旅客在一起说着话。
• A group of residents in the area had an agreement which was becoming widespread .
  这个居民区的一些居民达成一项不胫而走的协议。