tiers/tɪr/名词(多层、多层次中的)一层We sat in one of the upper tiers of the football stands.我们坐在足球场看台的上层位置。/tɪr/动词层叠;层层排列The seats in the theatre were steeply tiered.剧院的座位呈陡直的阶梯状排列。想跟读,去练习