This part follows cost-return principle, analyzes the factors of trade credit cost and their variance trend, bring forward the main measures in export corporation credit cost control.
这一部分遵循成本收益的分析原则，研究了信用成本的构成和变动趋势，论述出口企业信用销售过程中控制信用成本的主要措施。
It is difficult to recognize when we're at the peak of our poker prowess because we are seldom know whether or not to credit our successes to variance.
我们很难确知何时处于技术巅峰，因为我们很难知道这是否是由于运气因素。
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