| 释义 |
tierBrE /tɪə(r)/ NAmE /tɪr/ noun a row or layer of sth that has several rows or layers placed one above the other 级；阶；层◆ a wedding cake with three tiers 三层的结婚蛋糕◆ The seating is arranged in tiers . 座位是一级级排列的。one of several levels in an organization or a system 阶层；等级◆ We have introduced an extra tier of administration . 我们额外增加了一层管理。◆ a two -tier system of management 两级管理制 |