point pair的用法和樣例：
例句
- One could draw an extensive flowchart for every trade, but the key point is to observe several inviolate rules, mostly having to do with money management and multiple timeframes.
你可以針對每筆交易擴大流暢，但關鍵是不要違背原則，這些原則大都偶和資金管理，多重時間周期有關。 - Next, we use a magnetic current line source or electric dipole source in place of the plane wave to examine the coupling between the SPP and a point source.
接著我們把平面波改成用一個磁流線源或電偶極來等效一個發光波源，以模擬表面電漿波和波源之間的耦合現象。
