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有效价差；有效传播
1、effective───adj.有效的，起作用的；实际的，实在的；给人深刻印象
2、spread over───分散，传开；传遍，延续；遍布于…
3、effective tactics───有效战术
4、effective treatment───有效治疗
5、spread operator───扩散算子
6、cost effective───有成本效益的；划算的；成本效率；[计] 成本的有效的，效能价格合算的，价格可取的; [经] 本轻利厚，成本效果
7、spread───vt.传播，散布；展开；伸展；铺开；n.传播；伸展；vi.传播；伸展；adj.伸展的
8、effective measures───有效措施
9、spread knowledge───传播知识
1、The Economic Value of a trader is a combination of the Volume Traded x Effective Spread.───交易商的经济价值等于交易金额乘以有效推广。
2、Recent experience shows that addressing public health threats at their source is the most effective way to reduce their potential to spread internationally.───最近的经验表明，从根源上处理公共卫生威胁是减少其国际传播可能性的最有效方法。
3、has provided scientific basis for the safe and effective spread and use of Zhiyin tablet in clinic.───为临床安全、有效地推广使用治银片提供了依据。
4、The effective spread of Meteorological Information───论气象信息的有效传播
5、Therefore, it is an important key to build an effective spread mechanism for boosting the Public Relations construction.───因此，建立有效的传播机制，对于推进公关建设有着非常重要的意义。