"The past is a ghost that refuses to leave."
过去是一个拒绝离去的幽灵。
柠檬问题是指买家无法确定产品质量,因此只愿意支付反映平均质量的价格。
I don't sing because I'm happy; I'm happy because I sing.
可持续性不仅仅是一个流行词,它是负责任水产养殖的基础。
I don't believe in ghosts, but I see them all the time.