在公元前200年左右的中国，他们发现通过在粘土中添加矿物质可以改善陶瓷的外观和强度。
In China at around 200 BC, they discovered that by adding minerals to the clay they could improve both the appearance and the strength of the ceramics.
而改善通常发生在服用镇定剂的前四周。
Most of that improvement seemed to happen during the first four weeks.
这些衍生产品将在交易所交易，或是使用另类互换交易设施进行交易，这将改善交易前和交易后的价格透明度。
Such derivatives would be traded on exchanges or alternative swap execution facilities, which would improve pre - and post-trade price transparency.
应用推荐