过去从未消逝,它甚至还未过去。
水稻的未来在于杂交水稻技术。
He who would search for pearls must dive below.
The truth is, I often like women. I like their unconventionality. I like their completeness. I like their anonymity.
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。
Sustainability is no longer an option; it's a business imperative.