这些贷款延期偿还以支付旧账利息。Loans were extended to help pay the interest on the old ones.由于无力偿还1.14亿英镑的贷款担保，他被宣布破产。He was declared bankrupt after failing to pay a £114m loan guarantee.我欠他们一笔钱，不容易偿还。I owe them a debt that cannot easi...
归纳了对苯二胺的各种制备方法,并讨论了其工业化的优劣.The synthesis ofp - Phenylenediamine was summarized and its route of industrialisation was discussed.简要介绍了对 苯二胺 的用途和新工艺法合成对 苯二胺 的前景.Finally, application ofp - phenylenediame and its new craft p...