"I've invited Israeli Prime Minister Netayahu and Palestinian Authority President Abbas to meet on September second in Washington,D.C., to relaunch direction negotiations to resolve all final status issues, which we believe can be completed within one year."
VOA: special.2010.08.21
This vector i prime has got a horizontal part, This kind of trigonometry you should know all the time.
矢量 i' 有一个水平方向的分量,这类三角关系你们应该已经很熟悉了
If you do, the unit vectors are called i prime and j prime, the components of the vector change.
如果这么做,单位矢量就是 i' 和 j',矢量的两个分量也会发生变化
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