tier

柯林斯词典

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