On other occasions , these letters will need to defend a difficult position , while still attempting to persuade people and organizations to keep buying ? in spite of amended trading terms or increased prices , a delayed order or a rejected request for a discount 当在贸易条件改变、价格提高、订单延期或拒绝折扣等情况下，仍力图说服某人或某组织继续购买，此类情形下的销售信函则需防卫一个艰难的立场。
But this optimization does not improve the status and profit of china in international division of labor , on the contrary , china foreign trade terms and conditions has tended to be worsened , which increase difficulties for china to get continuous development and economic growth 但是对外贸易结构的高度化并没有改善我国在国际分工中的地位和利益，反而使中国贸易条件呈恶化的趋势，从而难以实现对外贸易的持续发展和经济的增长。
But all these interests of trade are potential , a later - developing country can get interest or not , and the sizes of interests depend on some conditions on practice . the direct factors which affect interests of trade consists of the terms of trade , the sizes and 贸易规模、结构和贸易条件是影响贸易利益大小的直接因素，而资本、人力资本积累和技术进步等生产因素是影响贸易利益的决定性因素，制度和环境是获取贸易利益的重要制约因素。
Deteriorating terms of trade has universality and relativity only by continuously promoting technological progress and speeding up the readjustment of industrial structure , can we ensure the sustained improvement of terms of trade and gains from trade and maintain sustained economic development 贸易条件恶化具有普遍性和相对性；只有不断地促进技术进步和加快产业结构的调整，才能保证贸易条件和贸易利益的持续改善，保持经济的持续发展。
Currently , domestic academic circles and government executive departments research much in trade terms concerned with environment . but the author think it is not enough that only condemn the developed counties set green - trade barriers in terms of environment protection and try every means to avoid green - trade barriers 当前国内学术界、政府执行部门等对涉及环境的贸易条件研究较多，但笔者认为，仅仅是谴责发达国家以环保名义设置绿色贸易壁垒，想方设法规避绿色壁垒是远远不够的。
Sharply higher oil prices present oil - importing economies with a terms - of - trade shock , in that the prices of imports relative to those of exports increase suddenly . the import bill becomes larger over a short period of time , leading to deterioration in the current - account balance of international payments 油价飙升会令这类经济体系的进口货价相对出口货价瞬间上升，使贸易条件转差进口成本在短期内增加，会导致国际收支平衡表内的经常帐项目差额恶化，进而影响这些经济体系的货币汇率。
This strategy itself and its theoretical basis have many shortcomings , which results in a series of problems that include the incompetence of our exports , lack of power to increase export , worse off terms of trade , less advanced industry structures and so on . this situation makes the development of our country ' s foreign trade fall into the trap of comparative advantage 由于综合型外贸战略本身及其理论基础都存在诸多缺陷，而且其实施结果导致了我国出口商品竞争力不足、出口增长乏力、贸易条件日趋恶化、产业结构低级化等一系列问题，使我国外贸发展陷入了“比较优势陷阱” 。
