piece something together        
phrasal verb with piece verb uk/piːs/ us/piːs/
 拼合;凑集
to create something by joining the separate parts of it together or by joining different things together
  The ancient skull has been pieced together from fragments. 这个古人类头骨是由头骨碎片拼合起来的。 
 Kevin has done a great job of piecing together a tremendous team. 凯文组成了一支出色的队伍,真是了不起。 
 The police are collecting clues in order to piece together the details of the day she died. 警察正在搜集线索,以弄清她死那天的细节。