tier

1. N-COUNT A tier is a row or layer of something that has other layers above or below it. 排; 层

...the auditorium with the tiers of seats around and above it. …周围和上方有一排排座位的礼堂。

2. COMB in ADJ Tier is also a combining form. (用于构成合成形容词) …排的; …层的

...a three-tier wedding cake. …一个3层的结婚蛋糕。

3. N-COUNT A tier is a level in an organization or system. (组织或系统中的) 级

Islanders have campaigned for the abolition of one of the three tiers of municipal power on the island. 岛民们已经发起了运动，要废除该岛3级市政权力中的1级。

4. COMB in ADJ Tier is also a combining form. (用于构成合成形容词) …级的

...the possibility of a two-tier system of universities. …大学双轨制的可能性。

5. V to be or arrange in tiers 使层叠; 按层排列

V

1. N a person or thing that ties 捆绑的人(或物)