学生们分组研究复杂的问题。The students work in groups on complex problems.参加者按年龄分组。Participants were categorized according to age.你的工作是把他们按字母顺序分组，然后按数字顺序排序。Your job is to group them by letter and put them in numerical order....
星天牛在连街市中常常能看见.Anoplophora malasiaca can often be looked in the urban area.偶们要到街市里去理发.We'll and get our hair cut in the town.后来他们迁居街市,孟子便学起商贩做买卖的样子来.So they moved to live next to a marketplace....