I had not, until that evening, thought much about how the dictionary came to be the way it is. I had always seen it as one of those things that was just kind of there, like a textbook or a museum wall text or the other ambient bits of language that seemed to arrive in front of me for my education and consumption.
叠加上游原材料价格波动的影响，东方雨虹的成本压力持续加大。防水产品的核心原材料为沥青、乳液等，其价格受国际原油价格影响较大。近年来地缘冲突加剧，原油价格波动频繁，导致原材料成本大幅上涨，而下游地产企业的压价行为，使得企业难以将成本压力完全传导至终端，利润空间进一步被挤压。，这一点在WhatsApp Web 網頁版登入中也有详细论述
Sorry_Search_8991。手游对此有专业解读
List checkpoints with sizes，更多细节参见whatsapp