柯林斯词典drop-off (drop-offs) 1. N-COUNT A drop-off in something such as sales or orders is a decrease in them. (销售或订单等的)下降[美国英语] [N 'in' n] ...a sharp drop-off in orders from Asia. ...来自亚洲订单的一次大幅降低。 返回 drop-off