随着各国经济交往的日益密切，国家间缔结的避免双重征税协定的数量也不断增加。
Following the increase in international trade and investments, more and more bilateral tax treaties are created to avoid international double taxation.
因为有利于这两个国家间进行合作的几种因素都一直在起作用，他们之间才能够成功地达成科学技术合作协定。
The two countries could reach agreement successfully on scientific and technological cooperation because several factors favorable to their cooperation had been at work.
因为有利于这两个国家间进行合作的几种因素都一直在起作用，他们之间才能够成功地达成科学技术合作协定。
The two countries could reach agreement successfully on scientific and technological cooperation because several factors favorable to their cooperation had been at work.
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