-tiered       
suffix uk/ -tɪəd/ us/ -tɪrd/
 …层的;…级的
having a particular number of tiers (= layers or levels )
  a two-tiered structure 两层的结构 
 a three-tiered cake 三层的蛋糕 
 See: tier
 - More examples
 - This 3-tiered steamer set is ideal for cooking vegetables.
 - I hope we finally allow a 2-tiered system to flourish.
 - a 4-tiered box filled with exotic chocolates