lower at对 ... 表示不满
loweradj.低的;下级的;下层的v.降低;减弱;跌落
Lower limb varices下肢静脉曲张
lower wing coverts下覆羽
lower your coloursvi.放弃要求(退让;投降;屈服)
lower elixir field下丹田
lower tail coverts尾下覆羽
lower guiding drug下层导药
lower social class社会下层阶级
lower orbital bone出页
lower end of femur股骨下端骨骺分离
lower case letters小写字体