*gain² n 1 [C,U] an increase in the amount or level of something 〔数量的〕增加; 〔水平的〕提高: Try to avoid too much weight gain. 要避免体重增加太多。 + in There were steady gains in wage levels through the decade. 这十年里工资水平稳步增长。 2 [C] an advantage or an improvement 得益; 进展: gains in medical science 医学上的进步