One is " price skimming" -starting high and then lowering the price as demand ebbs. The second is " price penetration" , pricing low to maximise volume.

一种是“撇脂定价法”——从高位开始，然后随着需求的下降而降低价格。第二种是“价格渗透”，即通过压低价格来使销量最大化。