designation of chromosome

例句：

1. 1. Thepresident has designated a new ambassador to theUnited States.
   总统已指定一位新的美国大使。
2. 2. The judge designated the jury for thetrial.
   法官指定了陪审团进行审判。
3. 3. The company has designated a new CEOto lead the business.
   公司已指定一位新的首席执行官领导业务。