n.等级( tier的名词复数 )；包扎的人；一排高过前面一排的东西；阶梯座位的一排 英英释义： tiern.a relative position or degree of value in a graded group同义词：gradelevelany one of two or more competitors who tie one anothera worker who ties something同义词：tier upsomething that is used for tying"the s