job lot
noun [ C ] informal uk/ˌdʒɒb ˈlɒt/ us/ˌdʒɑːb ˈlɑːt/
（以较低价格买卖的）一批杂货
a collection of various objects that are bought or sold as a group, usually at a low price
I bought a job lot of second-hand children's books at an auction. 我在拍卖会上买了一批廉价的二手儿童读物。