undersell
verb [ T ] uk/ˌʌn.dəˈsel/ us/ˌʌn.dɚˈsel/ undersold | undersold
(SELL CHEAPLY)
以低于（竞争对手）的价格出售
to sell goods at a price lower than a competitor
A big supermarket can usually undersell a small local store. 大型超市的售价常常可以低于当地的小店铺。
(BE MODEST)
贬损（尤指自己）
to not give something or someone, especially yourself, the praise that is deserved
Don't undersell yourself - you have a lot to offer a company. 不要妄自菲薄——你有很多东西可以贡献公司。