1. | 级;阶;层a row or layer of sth that has several rows or layers placed one above the other |
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。 |
2. | 阶层;等级one of several levels in an organization or a system |
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 |