看上去我们的道德标准指南针的指针，毕竟也不是那么的直。
Looks like our resident moral compass isn't such a straight arrow after all.
假设你决定长途跋涉去北极，又不能坐飞机去，那么只好拿出指南针，根据指向北方的指针绘制出路径，对么？
Suppose you decide to make a trek to the North Pole. You can't catch a plane there. So instead, you pull out your compass, watch the needle swing northward and plot a path, right?
指南针的指针是指向北的。
当磁场围绕着带电导线时会有很有趣的现象发生，通常所用的电流产生的磁场相当的弱，最多可以使指南针的指针发生偏转。
While the magnetic field surrounding a current-carrying wire is indeed interesting, it is quite weak for common amounts of current, able to deflect a compass needle and not much more.
早期的指南针采用了磁化指针和方位盘的组合方式，整个指南针从便携性、指示灵敏度上都有一定不足。
Since the early use of a magnetic compass and direction-pointer of the composition, the entire compass from scratch, on the instructions of a certain sensitivity of the defect.
早期的指南针采用了磁化指针和方位盘的组合方式，整个指南针从便携性、指示灵敏度上都有一定不足。
Since the early use of a magnetic compass and direction-pointer of the composition, the entire compass from scratch, on the instructions of a certain sensitivity of the defect.
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